Corydoras julii

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Corydoras julii
Juliipanzerwels (Corydoras Julii) im Aquarium.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Siluriformes
Family: Callichthyidae
Genus: Corydoras
Species:
C. julii
Binomial name
Corydoras julii

Corydoras julii (also known as the julii cory or leopard catfish [2] ) is a small freshwater catfish native to eastern Brazil. It is often confused with Corydoras trilineatus , [3] the three stripe corydoras. Corydoras julii are small, peaceful shoaling fish, and are typically kept in groups in captivity. [4]

Contents

Physical appearance

Corydoras julii is a relatively small species of fish, growing to be no more than 52 millimeters in length. [5] Its skin is a translucent whitish-gray, with fine black spotting across the body and a horizontal stripe which reaches up the mid-body until it is equal with the front base of the dorsal fin. This spotting pattern is the primary visual difference between C. julii and three stripe corydoras (C. trilineatus), which have larger reticulations, as opposed to spots, and a longer mid-body stripe. C. julii might be further distinguished from C. trilineatus by the spotted pattern on its head; however, C. trilineatus can also show this pattern on occasion. [5] Females are typically larger and rounder than males. [6]

Behavior

Diet

Corydoras julii, like almost all Corydoras species, are bottom-feeding scavengers. Their diet consists primarily of small invertebrates which they sift from the substrate, expelling the particles of sand and sediment through their gill openings.

In captivity, their diet is frequently sinking pellets rich in insect and other invertebrate proteins, as well as live or frozen invertebrates like bloodworms, daphnia, brine shrimp, and California blackworms ( Lumbriculus variegatus ). [4]

Breeding

After sexual maturity, Corydoras spawning appears to be triggered by storms. [6] During this storm, the fish eat increased amounts of insects. The water gradually decreases temperature over the course of a few days. [6]

Corydoras fish breed in a position resembling a "T formation". In this formation, the female swims up to the male's abdomen, and consumes sperm released by the male. The sperm rapidly travels though the female's intestinal tract and fertilizes the eggs in the cloaca. Small, white, sturdy eggs are laid on plant leaves in the wild. Adult corydoras have been known to eat their own eggs. [6]

Related Research Articles

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

Callichthyidae is a family of catfishes, called armored catfishes due to the two rows of bony plates along the lengths of their bodies. It contains some of the most popular freshwater aquarium fish, such as many species in the genus Corydoras.

<i>Corydoras</i> Genus of fishes

Corydoras is a genus of freshwater catfish in the family Callichthyidae and subfamily Corydoradinae. The species usually have more restricted areas of endemism than other callichthyids, but the area of distribution of the entire genus almost equals the area of distribution of the family, except for Panama where Corydoras is not present. Corydoras species are distributed in South America where they can be found from the east of the Andes to the Atlantic coast, from Trinidad to the Río de la Plata drainage in northern Argentina. Species assigned to Corydoras display a broad diversity of body shapes and coloration. Corydoras are small fish, ranging from 2.5 to 12 cm in SL., and are protected from predators by their body armor and by their sharp, typically venomous spines.

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

The bronze corydoras, green corydoras, bronze catfish, lightspot corydoras or wavy catfish is a tropical freshwater fish in the "armored catfish" family, Callichthyidae, often kept in captivity by fish keepers. It is widely distributed in South America on the eastern side of the Andes, from Colombia and Trinidad to the Río de la Plata basin. It was originally described as Hoplosoma aeneum by Theodore Gill in 1858 and has also been referred to as Callichthys aeneus.

<span class="mw-page-title-main">Sterba's corydoras</span> Species of fish

Sterba's corydoras is a member of the South American Corydoras genus of freshwater aquarium catfish and one of the most popular species of Corydoras due to its attractive markings. The fish is native to the Guaporé River region between Bolivia and Brazil.

<i>Corydoras paleatus</i> Species of fish

Corydoras paleatus is a species of catfish of the family Callichthyidae. Its common names include blue leopard corydoras, mottled corydoras, and peppered catfish. It originates from the lower Paraná River basin and coastal rivers in Uruguay and Brazil.

<i>Corydoras panda</i> Species of fish

Corydoras panda is a species of catfish belonging to the genus Corydoras, of the family Callichthyidae, and is a native member of the riverine fauna of South America. It is found in Peru and Ecuador, most notably in the Huanaco region, where it inhabits the Rio Aquas, the Rio Amarillae, a tributary of the Rio Pachitea, and the Rio Ucayali river system. The species was first collected by Randolph H. Richards in 1968, and was named Corydoras panda by Nijssen and Isbrücker in 1971. The specific name is an allusion to the appearance of the fish, which possesses large black patches surrounding the eyes, reminiscent of those found on the giant panda. Accordingly, the common names for this fish, which is a popular aquarium species, are panda corydoras and panda catfish.

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

The blacktop corydoras is a tropical freshwater fish belonging to the subfamily Corydoradinae of the family Callichthyidae. It originates in inland waters in South America, and is found in the Amazon River basin in Ecuador and Northern Peru. It was described by Edward Drinker Cope in 1872.

<span class="mw-page-title-main">Adolfo's catfish</span> Species of fish

Adolfo's catfish is a tropical freshwater fish belonging to the Corydoradinae sub-family of the family Callichthyidae. It originates in inland waters in South America, and is found in the Rio Negro basin and the Rio Uapes in Brazil. It is also known as Adolfo's corydoras. It has similar patterns to the C. imitator but it has a shorter snout and red coloration in front of its dorsal fin.

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

The banded corydoras or bearded catfish is a subtropical freshwater fish belonging to the subfamily Corydoradinae of the family Callichthyidae. It originates in coastal drainages in South America from Rio de Janeiro to Santa Catarina, Brazil.

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

The elegant corydoras or elegant catfish is a tropical freshwater fish belonging to the subfamily Corydoradinae of the family Callichthyidae. It originates in inland waters in South America, and is found in the Upper Amazon River basin in Brazil, Colombia and Peru. The specific epithet elegans means elegant.

<span class="mw-page-title-main">Salt and pepper catfish</span> Species of fish

The salt and pepper catfish is a tropical freshwater fish belonging to the Corydoradinae sub-family of the family Callichthyidae. It originates in inland waters in South America, and is found in the Upper Orinoco River basin in Venezuela and Colombia.

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

The dwarf corydoras, dwarf catfish, tail spot pygmy catfish, or micro catfish is a tropical freshwater fish belonging to the subfamily Corydoradinae of the family Callichthyidae. It originates in inland waters in South America, and is found in the Amazon River and Paraguay River basins in Argentina, Bolivia, and Brazil. The specific epithet hastatus means with a spear, in reference to the spearhead-like spot on the tail root.

<span class="mw-page-title-main">Green gold catfish</span> Species of fish

The green gold catfish is a tropical freshwater fish belonging to the Corydoradinae subfamily of the family Callichthyidae. It originates in inland waters in South America, and is found in the Meta River basin in Colombia.

Corydoras nanus is a tropical freshwater fish belonging to the Corydoradinae sub-family of the family Callichthyidae. It originates in inland waters in South America, and is found in the Suriname and Maroni River basins in Suriname and the Iracoubo River basin in French Guiana.

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

Corydoras pygmaeus, or the pygmy corydoras or pygmy catfish is a tropical and freshwater fish belonging to the subfamily Corydoradinae of the family Callichthyidae. It originates in tropical inland waters in South America, and is found in the Madeira River basin in Brazil.

<i>Corydoras reticulatus</i> Species of fish

Corydoras reticulatus, also called the reticulated corydoras, mosaic corydoras, network catfish, or network corydoras, is a tropical freshwater fish belonging to the Corydoradinae sub-family of the family Callichthyidae. It originates in inland waters in South America, and is found in the Lower Amazon River basin in Brazil.

Sychr's catfish is a tropical freshwater fish belonging to the Corydoradinae sub-family of the family Callichthyidae. It originates in inland waters in South America, and is found in the Nanay River basin in Loreto, Peru.

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

The three stripe corydoras, leopard catfish, false julii corydoras, or three line catfish is a tropical freshwater fish belonging to the subfamily Corydoradinae of the family Callichthyidae. It originates in inland waters in South America, and is found in the central Amazon River basin in Brazil and Colombia, Peruvian [Amazon and coastal rivers in Suriname.

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

The emerald catfish is a tropical freshwater fish belonging to the Corydoradinae sub-family of the family Callichthyidae native to the Amazon Basin in South America. It has traditionally been known as Brochis splendens. The fish has appeared on a stamp in Brazil.

<i>Corydoras rabauti</i> Small species of tropical freshwater armoured catfish

Corydoras rabauti, also known as the rust corydoras, or Rabaut's corydoras> is a small species of tropical freshwater armoured catfish native to the Upper Amazon, Solimões, and Rio Negro basins in South America. It was first described by the American ichthyologist Francesca Raimonde La Monte in 1941, and is frequently seen in the aquarium trade.

References

  1. Instituto Chico Mendes de Conservação da Biodiversidade (ICMBio) (2022). "Corydoras julii". IUCN Red List of Threatened Species . 2022: e.T134702401A134702405. doi: 10.2305/IUCN.UK.2022-2.RLTS.T134702401A134702405.en . Retrieved 4 August 2022. doi:10.2305/IUCN.UK.2022-1.RLTS.T134702401A134702405.pt
  2. "Corydoras julii summary page". FishBase. Retrieved 2019-01-07.
  3. "Corydoras(ln9) trilineatus • Callichthyidae • Cat-eLog".
  4. 1 2 Brand, Robert (2017-08-16). "Corydoras Julii - The Care, Feeding, and Breeding of Corydoras Julii". Aquarium Tidings. Retrieved 2022-11-27.
  5. 1 2 "Corydoras (lineage 9) julii • Callichthyidae • Cat-eLog". www.planetcatfish.com. Retrieved 2022-11-27.
  6. 1 2 3 4 "Captivating Cory Catfish | Tropical Fish Hobbyist Magazine". www.tfhmagazine.com. Retrieved 2022-11-27.