Corydoras julii: Difference between revisions
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{{Short description|Species of fish}} |
{{Short description|Species of fish}} |
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{{For|other fish species called leopard catfish|Leopard catfish (disambiguation){{!}}Leopard catfish}} |
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{{Multiple issues| |
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{{howto|date=July 2011}} |
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{{cleanup|date=July 2011}} |
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{{Speciesbox |
{{Speciesbox |
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| image = Corydoras |
| image = Juliipanzerwels (Corydoras Julii) im Aquarium.jpg |
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| status = |
| status = LC |
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| status_system = |
| status_system = IUCN3.1 |
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| status_ref = <ref name="iucn status 4 august 2022">{{cite iucn |author= Instituto Chico Mendes de Conservação da Biodiversidade (ICMBio) |date=2022 |title=''Corydoras julii'' |volume=2022 |page=e.T134702401A134702405 |<!--This DOI gets past the cite IUCN checks-->doi=10.2305/IUCN.UK.2022-2.RLTS.T134702401A134702405.en |access-date=4 August 2022}} <!--This DOI links to a page-->{{doi|10.2305/IUCN.UK.2022-1.RLTS.T134702401A134702405.pt}}</ref> |
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| taxon = Corydoras julii |
| taxon = Corydoras julii |
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| authority = [[Franz Steindachner|Steindachner]], 1906 |
| authority = [[Franz Steindachner|Steindachner]], 1906 |
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}} |
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'''''Corydoras julii''''' (also known as the '''julii cory''' or '''leopard catfish'''<ref>{{Cite web|url=https://www.fishbase.us/summary/Corydoras-julii.html|title=Corydoras julii summary page|website=FishBase|language=en|access-date=2019-01-07}}</ref>) is a small freshwater [[catfish]] native to eastern Brazil. It is often confused with ''[[Threestripe corydoras|Corydoras trilineatus]]'',<ref>{{cite web | url=https://www.planetcatfish.com/common/species.php?species_id=508 | title=Corydoras(ln9) trilineatus • Callichthyidae • Cat-eLog }}</ref> |
'''''Corydoras julii''''' (also known as the '''julii cory''' or '''leopard catfish'''<ref>{{Cite web|url=https://www.fishbase.us/summary/Corydoras-julii.html|title=Corydoras julii summary page|website=FishBase|language=en|access-date=2019-01-07}}</ref>) is a small freshwater [[catfish]] native to eastern Brazil. It is often confused with ''[[Threestripe corydoras|Corydoras trilineatus]]'',<ref>{{cite web | url=https://www.planetcatfish.com/common/species.php?species_id=508 | title=Corydoras(ln9) trilineatus • Callichthyidae • Cat-eLog }}</ref> the three stripe corydoras. ''Corydoras julii'' are small, peaceful shoaling fish, and are typically kept in groups in captivity.<ref name=":2" /> |
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== Physical appearance == |
== Physical appearance == |
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''Corydoras julii'' |
''Corydoras julii'' is a relatively small species of fish, growing to be no more than 52 millimeters in length.<ref name=":0">{{Cite web |title=Corydoras (lineage 9) julii • Callichthyidae • Cat-eLog |url=https://www.planetcatfish.com/common/species.php?species_id=378 |access-date=2022-11-27 |website=www.planetcatfish.com |language=en-gb}}</ref> 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.<ref name=":0" /> Females are typically larger and rounder than males.<ref name=":1">{{Cite web |title=Captivating Cory Catfish {{!}} Tropical Fish Hobbyist Magazine |url=https://www.tfhmagazine.com/articles/freshwater/bottom-of-the-tank-full |access-date=2022-11-27 |website=www.tfhmagazine.com |language=en}}</ref> |
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== Behavior == |
== Behavior == |
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=== Diet === |
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''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. |
''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. |
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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]]'').<ref name=":2">{{Cite web |last=Brand |first=Robert |date=2017-08-16 |title=Corydoras Julii - The Care, Feeding, and Breeding of Corydoras Julii |url=https://aquariumtidings.com/corydoras-julii-care/ |access-date=2022-11-27 |website=Aquarium Tidings |language=en-US}}</ref> |
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=== Breeding === |
=== Breeding === |
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After sexual maturity, ''Corydoras'' spawning appears to be triggered by storms.<ref name=":1" /> During this storm, the fish eat increased amounts of insects. The water gradually decreases temperature over the course of a few days.<ref name=":1" /> |
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{{No sources section|date=April 2022}}{{Tone|date=April 2022}} |
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Females are larger and rounder than males. Usually, cory catfish are bred in groups of two males to one female. They can also be bred in a large school. {{Citation needed|date=July 2022}} |
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After sexual maturity, the fish will spawn during a storm. During this storm, the fish eat increased amounts of insects. The water gradually decreases temperature over the course of a few days.<ref>{{Cite web |title=Captivating Cory Catfish {{!}} Tropical Fish Hobbyist Magazine |url=https://www.tfhmagazine.com/articles/freshwater/bottom-of-the-tank-full |access-date=2022-05-12 |website=Home {{!}} TFH Magazine |language=en}}</ref> |
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''Corydoras'' fish spawn in a position resembling a "T formation", as most experts report; the female fish, enticed by the male, swims up to the male's abdomen. She will eat the sperm released by the male fish. The sperm rapidly travels though the female's body and fertilizes the eggs.<ref>{{Cite web |title=Captivating Cory Catfish {{!}} Tropical Fish Hobbyist Magazine |url=https://www.tfhmagazine.com/articles/freshwater/bottom-of-the-tank-full |access-date=2022-05-12 |website=Home {{!}} TFH Magazine |language=en}}</ref> The female then lays eggs into her pelvic fins. After mating, the female will place the eggs on a surface and repeat this process. {{Citation needed|date=July 2022}} |
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Corys are egg laying fish and will lay small, white, sticky eggs on all surfaces. In an aquarium setting they often lay these eggs on the glass of the tank. Females lay many eggs at a time, which they have also been known to eat. {{Citation needed|date=July 2022}} |
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''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.<ref name=":1" /> |
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=== In Aquaria === |
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''Corydoras julii'' are small, unaggressive fish. They are shoaling fish,<ref name=":0" /> and are typically kept in groups when in captivity. They are rarely available commercially. Fish labelled as "julii corys" for sale are often the misidentified ''[[Corydoras leopardus|C. leopardus]]'' ''or C. trilineatus''.<ref>{{Cite web |title=Corydoras julii • Callichthyidae • Cat-eLog - PlanetCatfish.com |url=https://www.planetcatfish.com/common/species.php?species_id=378 |access-date=2019-01-07 |website=www.planetcatfish.com}}</ref> |
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==References== |
== References == |
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{{Reflist}} |
{{Reflist}} |
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{{Taxonbar|from=Q1711785}} |
{{Taxonbar|from=Q1711785}} |
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[[Category:Fishkeeping]] |
[[Category:Fishkeeping]] |
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[[Category:Fish described in 1906]] |
[[Category:Fish described in 1906]] |
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Latest revision as of 02:17, 5 October 2023
| Corydoras julii | |
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_im_Aquarium.jpg)
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Siluriformes |
| Family: | Callichthyidae |
| Genus: | Corydoras |
| Species: | C. julii
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| Binomial name | |
| Corydoras julii Steindachner, 1906
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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]
Physical appearance
[edit]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
[edit]Diet
[edit]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
[edit]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]
References
[edit]- ^ 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
- ^ "Corydoras julii summary page". FishBase. Retrieved 2019-01-07.
- ^ "Corydoras(ln9) trilineatus • Callichthyidae • Cat-eLog".
- ^ a b Brand, Robert (2017-08-16). "Corydoras Julii - The Care, Feeding, and Breeding of Corydoras Julii". Aquarium Tidings. Retrieved 2022-11-27.
- ^ a b "Corydoras (lineage 9) julii • Callichthyidae • Cat-eLog". www.planetcatfish.com. Retrieved 2022-11-27.
- ^ a b c d "Captivating Cory Catfish | Tropical Fish Hobbyist Magazine". www.tfhmagazine.com. Retrieved 2022-11-27.
External links
[edit]- Froese, Rainer; Pauly, Daniel (eds.). "Corydoras julii". FishBase. December 2011 version.
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