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 one of the longest-lived fishes, capable of living more than a century. [2] 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, [3] [4] [5] [2] stocky fish like its relatives the bigmouth buffalo [6] (I. cyprinellus) and the black buffalo [6] [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 families, these three species superficially resemble the common carp (Cyprinus carpio), but an easy and notable difference is that all catostomids lack the characteristic barbels of carp.

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. Fin colors 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). [4]

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. [7] 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. [3] A 2020 study on a single female specimen from Oklahoma found it was 62 years old. [4] In 2023, smallmouth buffalo otoliths were age validated, with longevity more than 60 years in Oklahoma. [5] In Arizona, smallmouth buffalo as old as 90–100 years of age were discovered. [2] The onset of sexual maturity for smallmouth buffalo likely varies by latitude and population but is typically 4–5 years for males and around 6 years for females.

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, [8] [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. [6] [9] [10] 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. [11] 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, [12] 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. [12] [13] Smallmouth buffalo are not native to North Carolina, but it is not known when they were introduced there. [13]

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The quillback, also known as the quillback carpsucker, 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 carplike appearance. However, the quillback is not a carp. It can be distinguished from carp by the lack of barbels around the mouth. The quillback is long-lived, with age up to 30 years, 44 years, and 52 years documented across different studies.

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

Cypriniformes is an order of ray-finned fish, including the carps, minnows, loaches, and relatives. Cypriniformes is an Order within the Superorder Ostariophysi consisting of "Carp-like" Ostariophysins. This order contains 11-12 families, although some authorities have designated as many as 23, over 400 genera, and more than 4,250 species, with new species being described every few months or so, and new genera being recognized frequently. They are most diverse in southeastern Asia, and 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 or 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.

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

The bigmouth buffalo is a fish native to North America. 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

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<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 greater than 100 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">Golden redhorse</span> Species of fish

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

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The shorthead redhorse is a wide-ranging species in North America. The shorthead redhorse is native to central and eastern North America. However, its range has expanded to include areas like the Hudson estuary and Grayson County, Texas. It inhabits small to large rivers and lakes, and lives in the benthic zone. Shorthead redhorse feed on benthic invertebrates and can consume plant material from the benthic environment that it inhabits. When it spawns, shorthead redhorse move into more shallow streams and spawn over gravel or rocky shoals. They will also spawn in springs with swift moving water. The shorthead redhorse is important to humans because it is a game fish. It is also important to anglers because of its role in the ecosystem; it is prey for larger game fish such as northern pike and muskellunge.

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

The silver redhorse is a species of freshwater fish endemic to Canada and the United States. It is the longest-lived redhorse known, with a maximum reported age of 41 years. Sometimes called redhorse or sucker for short, it is in the family Catostomidae with other suckers. The species is distributed from Quebec to Alberta and is also in the Mississippi River, St. Lawrence River, Ohio River, and the Great Lakes basins. The current world record is 14 pounds, 14 ounces, caught by Chris Stephenson on Pickwick Lake in Alabama, April 1995 and certified by National Freshwater Fishing Hall of Fame. This species is of growing interest to rod-and-line anglers. The long-lived and late-maturing silver redhorse is also a sportfish pursued by kill-and-dump bowfishing, a 21st century unregulated sport that produces tons of wanton waste, and thus management and conservation are in need of updating.

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References

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