Smallmouth buffalo

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Smallmouth buffalo
Smallmouth buffalo.JPG
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Cypriniformes
Family: Catostomidae
Genus: Ictiobus
Species:
I. bubalus
Binomial name
Ictiobus bubalus
(Rafinesque, 1818)
Smallmouth Buffalo Distribution.png
The distribution of I. bubalus in the United States
Synonyms
  • Catostomus bubalusRafinesque, 1818
FMIB 33324 Ictiobus Bubalus (Ravinesque) FMIB 33324 Ictiobus Bubalus (Ravinesque).jpeg
FMIB 33324 Ictiobus Bubalus (Ravinesque)

The smallmouth buffalo (Ictiobus bubalus, from the Greek for "bull-fish" and "buffalo") is recently realized as one of the longest-lived fishes, capable of living more than a century. [2] The smallmouth buffalo is in decline across large portions of its range, [3] and is subject to unregulated exploitation. [4] [5] [6] [2] [7] They are a catostomid fish species native to the major tributaries and surrounding waters of the Mississippi River in the United States, as well as some other water systems where it has been introduced. It is a long-lived, [8] [9] [10] [2] stocky fish like its relatives the bigmouth buffalo [11] (I. cyprinellus) and the black buffalo [11] [2] (I. niger). The smallmouth buffalo's mouth is located ventrally like other Catostomidae species, whereas the bigmouth buffalo's mouth is terminal and opens forward. It is thought that smallmouth buffalo eyes are significantly larger than those of the black buffalo. Despite being members of different scientific suborders, these three species are sometimes conflated with common carp (Cyprinus carpio), but an easy and notable difference is that all catostomids lack the characteristic barbels of carp, and carp are not native to North America whereas buffalofish are. Like the other buffalofish species, the smallmouth buffalo is targeted by modern bowfishing. [11] [6] [4] [10] [3] [2] [5] [7]

Contents

Physical characteristics

The coloration of smallmouth buffalo ranges from shades of gray to brown and coppery green dorsally and pale yellow to white ventrally. Fins color match the portion of the body where they attach and are generally darker towards the tips. They are characteristically stocky, having a hump that rises up from the operculum. Pectoral fins protrude ventrally like the anal fins, the caudal fin has even lobes, and the dorsal fin protrudes from the top of the hump to a blunt point, then shortens and runs the remaining length of the body to the base of the tail. Typical adults reach a length around 40–60 cm (16–24 in), with some specimens reaching as much as 30.1 kg (66.4 pounds) and 101.5 cm (40.0 in). [9]

Habitat

The smallmouth buffalo is a hardy fish that frequents clear, moderate to fast-moving streams, but has been occasionally known in some lakes and ponds. If prefers waters with dense aquatic vegetation and a silty bottom. It has a high tolerance for hard water and can survive in waters with pH ranges of 6.5–8.5.

Diet

The smallmouth buffalo's diet is primarily that of a detritivore, using its ventral sucker mouth to pick up vegetation and other organic matter from the bottom of its habitat, often scraping algae off of rocks. It is also quite the invertivore, consuming zooplankton, insect larvae, mollusk larvae, and small crustaceans.

Life history

Spawning usually takes place in spring and summer, with more specific times depending on the location of the population. Migration is negligible. Spawning often occurs in shallower sections of streams where the egg can adhere to vegetation and gravel to keep from flowing away. Each female can lay tens of thousands to hundreds of thousands of eggs at a time depending on her size, and no parental care is applied and the eggs hatch in one to two weeks. The young hide in aquatic vegetation to avoid predators. The lifespan of a smallmouth buffalo was historically not well known because of limited study on their otoliths and a reliance instead on other structures (e.g. scales, fin rays, gill plates) that are inadequate for age analysis. [12] However, a 2019 study took an initial look at their otoliths (earstones) from a commercially-harvested population in the middle Mississippi River drainage and found that even with harvest, about half of the sample was 20 years or older, with the oldest being 39 years of age. [8] A 2020 study on a single female specimen from Oklahoma found it was 62 years old. [9] In 2023, smallmouth buffalo otoliths were age validated, with longevity more than 60 years in Oklahoma. [10] In Arizona, smallmouth buffalo as old as 90–100 years of age were discovered. [2] The onset of sexual maturity for smallmouth buffalo can vary by population but is typically 6–10 years for males and around 8–11 years for females. [3]

Relationship with humans

Although historically and derogatorily considered by many to be a rough fish, smallmouth buffalo are native to North American ecosystems, are the most common commercially sold freshwater fish in the United States, are sought after by traditional anglers on rod-and-line, [13] [2] and they have rapidly become sportfish as modernized night bowfishing has become increasingly popular since 2010 - a sport that targets this species among others. [11] [6] [4] Management of this species is in urgent need of reassessment as essentially no agency is tracking the ecological impact of modernized bowfishing, and there are virtually no limits on harvest. The species is highly valued by some as a human food source and the fish meal is common in animal feed. They are relatively quick and easy to raise in commercial farm ponds. Anglers seeking to hook a smallmouth buffalo have found success with doughballs and corn on hooks. [2]

An 82 lb 3 oz (37.3 kg) fish taken from Athens Lake, Texas on May 6, 1993 by angler Randy Collins stands as the International Game Fish Association (IGFA) all-tackle world record for the species, while a 63 cm (2.07 ft) specimen caught on May 16, 2022 in Livingston Lake, Texas by James Schmid is the current IGFA all-tackle length record. [14] The North Carolina state record for smallmouth buffalo is an 88 lb (40 kg) fish caught in Lake Wylie on November 14, 1993 by Tony Crawford, [15] who had previously set the state record with a 61.02 lb (27.68 kg) fish caught at the same lake on December 1, 1991, both through use of packbait. [15] [16] Smallmouth buffalo are not native to North Carolina, but it is not known when they were introduced there. [16]

Related Research Articles

<span class="mw-page-title-main">Quillback</span> Species of fish

The quillback, also known as the quillback sucker, is a type of freshwater fish of the sucker family widely distributed throughout North America. It is deeper-bodied than most suckers, leading to a fuller-bodied appearance. However, the quillback is not a carp. Quillback are catostomids, and like all catstomids, they do not have barbels around the mouth. The quillback is long-lived, with age up to 30 years, 44 years, 49 years, and 52 years documented across different studies throughout North America.

<span class="mw-page-title-main">Cypriniformes</span> Order of fishes

Cypriniformes is an order of ray-finned fish, which includes many families and genera of cyprinid fish, such as barbs, gobies, loaches, botias, and minnows. Cypriniformes is an “order-within-an-order”, placed under the superorder Ostariophysi—which is also made up of cyprinid, ostariophysin fishes. The order contains 11-12 families, over 400 genera, and more than 4,250 named species; new species are regularly described, and new genera are recognized frequently. Cyprinids are most diverse in South and Southeast Asia, but are entirely absent from Australia and South America. At 112 years old, the longest-lived cypriniform fish documented is the bigmouth buffalo.

<span class="mw-page-title-main">Otolith</span> Inner-ear structure in vertebrates which detects acceleration

An otolith, also called statoconium, otoconium or statolith, is a calcium carbonate structure in the saccule or utricle of the inner ear, specifically in the vestibular system of vertebrates. The saccule and utricle, in turn, together make the otolith organs. These organs are what allows an organism, including humans, to perceive linear acceleration, both horizontally and vertically (gravity). They have been identified in both extinct and extant vertebrates.

<span class="mw-page-title-main">Bowfishing</span> Fishing with archery equipment

Bowfishing is a fishing technique that uses specialized archery equipment to impale and retrieve fish. A bowfisher will use a bow or crossbow to shoot fish through the water surface with a barbed arrow tethered to a line, and then manually retrieve the line and arrow back, in modern times usually with a reel mounted on the bow. Unlike other popular forms of fishing where baiting and exploiting the fish's instinctual behaviors are important, bowfishing is similar to spearfishing and relies purely on the fisherman's own visual perception and marksmanship, and usually do not involve using other tools such as hand net.

<span class="mw-page-title-main">Bighead carp</span> Species of fish

The bighead carp is a species of cyprinid freshwater fish native to East Asia, and is one of several Asian carps introduced into North America. It is one of the most intensively exploited fishes in fish farming, with an annual worldwide production of over three million tonnes in 2013, principally from China. Unlike the omnivorous common carp, bighead carp are primarily filter-feeding algae eaters, preferentially consuming zooplankton but also phytoplankton and detritus.

<span class="mw-page-title-main">Bigmouth buffalo</span> Species of fish

The bigmouth buffalo is a fish native to North America that is in decline. It is the largest North American species in the Catostomidae or "sucker" family, and is one of the longest-lived and latest-maturing freshwater fishes, capable of living 127 years and reproducing infrequently. Even at a century old they show no age-related declines, but instead improvements relative to younger individuals, making this species a biological marvel. It is commonly called the gourdhead, marblehead, redmouth buffalo, buffalofish, bernard buffalo, roundhead, or brown buffalo. The bigmouth buffalo is not a carp, nor is any other fish in the sucker family. Although they share the same order, each belong to different suborders and are native to separate continents.

<span class="mw-page-title-main">Silver carp</span> Species of fish

The silver carp or silverfin is a species of freshwater cyprinid fish, a variety of Asian carp native to China and eastern Siberia, from the Amur River drainage in the north to the Xi Jiang River drainage in the south. Although a threatened species in its natural habitat, it has long been cultivated in China as one of the "Four Famous Domestic Fish" (四大家鱼) together with Bighead carp, Black carp and Grass carp. By weight, more silver carp are produced worldwide in aquaculture than any other species of fish except for the grass carp. Silver carp are usually farmed in polyculture with other Asian carp, or sometimes with catla or other fish species.

<span class="mw-page-title-main">Black buffalo</span> Species of fish

The black buffalo is a North American species of freshwater fish in the Catostomidae or sucker family. With a lifespan of up to 24 years, it is among the longest-lived of freshwater fish species. Found in the Mississippi Basin and southern Great Lakes. It was first discovered in Canada in the western end of Lake Erie and has been reported from Boston Creek. The Tennessee distribution ranges from rivers and streams in the Cumberland Mountains, a few rivers in middle Tennessee, and in west Tennessee along the Mississippi River. The ecology of the species is quite similar to that of I. bubalus. I. niger has a ventrally positioned mouth, making the species’ diet benthic-oriented. It has a distinct shape that mocks I. bubalus and I. cyprinellus, considering it a hybrid between the two species.

<span class="mw-page-title-main">Greater redhorse</span> Species of freshwater fish found in northeastern North America

The greater redhorse is a species of freshwater fish found in northeastern North America. It is the largest member of the genus Moxostoma, with a maximum length of 80 cm (31.5 in). The greater redhorse is long lived with a maximum reported age of 27 years.

<span class="mw-page-title-main">Freshwater fish</span> Fish that mostly live in freshwater

Freshwater fish are fish species that spend some or all of their lives in bodies of fresh water such as rivers, lakes and inland wetlands, where the salinity is less than 1.05%. These environments differ from marine habitats in many ways, especially the difference in levels of osmolarity. To survive in fresh water, fish need a range of physiological adaptations.

Rough fish is a term used by some United States state agencies and anglers to describe fish that are less desirable to sport anglers within a defined region. The term usually refers to larger game fish species that are not commonly eaten, are too rare to be commonly encountered, or are not favorably sought by anglers for sporting purposes. Many of these species are actually very important in the commercial fishing industry, where they make up the bulk of commercial food fish catches in inland freshwater bodies.

<i>Moxostoma</i> Genus of fishes

Moxostoma, the redhorses or jumprocks, is a genus of North American ray-finned fish in the family Catostomidae. Redhorses are variable in size, geographic location, and other ecological traits such as spawning substrate. Several redhorses are long-lived, much like many other catostomid species. The silver redhorse is the longest-lived redhorse known by nearly a decade, with ages exceeding 40 years. Redhorses are broadly of conservation concern, as these long-lived species are highly intolerant to environmental pollution, habitat fragmentation, and are currently subject to unregulated 21st century sport bowfishing which is removing and wantonly wasting several of these species by the ton.

<span class="mw-page-title-main">Catostomidae</span> Family of fishes

The Catostomidae are the suckers of the order Cypriniformes, with about 78 species in this family of freshwater fishes. The Catostomidae are almost exclusively native to North America. The only exceptions are Catostomus catostomus, found in both North America and Russia, and Myxocyprinus asiaticus found only in China. In the Ozarks they are a common food fish and a festival is held each year to celebrate them. The bigmouth buffalo, Ictiobus cyprinellus, can reach an age up to 127 years, making it the oldest known freshwater teleost by more than 50 years.

<i>Ictiobus</i> Genus of fishes

Ictiobus, also known as buffalofishes, buffalofish or simply buffalo, is a genus of freshwater fish native to North America, specifically the United States, Canada, Mexico, and Guatemala. They are the largest and longest-lived of the North American suckers, reaching up to 1.23 m (4.0 ft) in length and more than 100 years of age for three of the five species. At up to 127 years for bigmouth buffalo, they are the longest-lived freshwater teleost, which is a group of more than 12,000 species. Bigmouth buffalo, black buffalo and smallmouth buffalo are found in the United States or Canada. Little is known about the two other buffalofish species: the fleshylip buffalo found in Mexico, or the usumacinta buffalo found in Mexico and Guatemala. Buffalofish are not carp, nor is any other catostomid; they belong to different scientific families having evolved on separate continents. Buffalofish live in most types of freshwater bodies where panfish are found, such as ponds, creeks, rivers, and lakes. Ictiobus were caught by the Lewis and Clark Expedition.

<span class="mw-page-title-main">River carpsucker</span> Species of fish

The river carpsucker is a freshwater fish belonging to the Catostomidae that is native to the inland United States and northern Mexico. This species has a slightly arched back and is somewhat stout and compressed. While the fins are usually opaque, in older fish they may be dark yellow. It is distributed along the Mississippi River basin from Pennsylvania to Montana. The river carpsucker, like most suckers, is a bottom feeder and obtains its nutrients from algae, microcrustaceans, and other various tiny planktonic plants and animals found in silty substrates. Like its congener, the quillback, the river carpsucker is long-lived, with a known maximum lifespan of 40 years in Colorado, and 47 years in Minnesota. It begins to reproduce typically in late spring, and the female usually releases more than 100,000 eggs. There is no parental care provided.

<span class="mw-page-title-main">Bomb pulse</span> Sudden increase of carbon-14 in the Earths atmosphere due to nuclear bomb tests

The bomb pulse is the sudden increase of carbon-14 (14C) in the Earth's atmosphere due to the hundreds of aboveground nuclear bombs tests that started in 1945 and intensified after 1950 until 1963, when the Limited Test Ban Treaty was signed by the United States, the Soviet Union and the United Kingdom. These hundreds of blasts were followed by a doubling of the relative concentration of 14C in the atmosphere.

References

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