Corydoras julii: Difference between revisions
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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> |
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== In the aquarium == |
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| ⚫ | ''Corydoras julii'' are small |
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== Physical appearance == |
== Physical appearance == |
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''Corydoras julii'' are a relatively small species of fish, growing to be no more than 52 millimeters in length.<ref name=":0">{{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> Its skin is a whitish-gray, almost transparent color with fine black spotting all over and a horizontal stripe that reaches halfway down its mid-body. This pattern helps distinguish it from the more common species ''C. trilineatus'', which tends to 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>{{cite web |date=2020-10-22 |title=Corydoras(ln9) julii • Callichthyidae • Cat-eLog |url=https://www.planetcatfish.com/common/species.php?species_id=378 |access-date=24 May 2021 |website=PlanetCatfish}}</ref> |
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== Behavior == |
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They grow to less than 2.5 inches long,<ref>{{Cite web|url=https://www.planetcatfish.com/common/species.php?species_id=378|title=Corydoras julii • Callichthyidae • Cat-eLog - PlanetCatfish.com|website=www.planetcatfish.com|access-date=2019-01-07}}</ref> making them one of the smaller members of their family. |
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== Feeding == |
=== Feeding === |
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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. In aquaria, they can be fed sinking pellets rich in insect and other invertebrate proteins, as well as live or frozen foods such as bloodworms, tubifex, and California blackworms (''Lumbriculus variegatus''). Although they will often consume sinking algae wafers, these are not considered to be nutritionally appropriate. |
''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 aquaria, they can be fed sinking pellets rich in insect and other invertebrate proteins, as well as live or frozen foods such as bloodworms, tubifex, and California blackworms (''Lumbriculus variegatus''). Although they will often consume sinking algae wafers, these are not considered to be nutritionally appropriate. |
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== Breeding == |
=== Breeding === |
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{{No sources section|date=April 2022}}{{Tone|date=April 2022}} |
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Sexing corys is not difficult provided they are well fed and in good condition. 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. |
Sexing corys is not difficult provided they are well fed and in good condition. 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. |
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Corys are egg laying fish and will lay small, white, sticky eggs on all surfaces in the aquarium, often on the glass itself. Females lay many eggs at a time though, the catfish will eat most of the eggs unless removed. |
Corys are egg laying fish and will lay small, white, sticky eggs on all surfaces in the aquarium, often on the glass itself. Females lay many eggs at a time though, the catfish will eat most of the eggs unless removed. |
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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 in actuality 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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Revision as of 05:49, 25 June 2022
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| Corydoras julii | |
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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[1]) is a small freshwater catfish native to eastern Brazil. It is often confused with Corydoras trilineatus.[2]
Physical appearance
Corydoras julii are a relatively small species of fish, growing to be no more than 52 millimeters in length.[3] Its skin is a whitish-gray, almost transparent color with fine black spotting all over and a horizontal stripe that reaches halfway down its mid-body. This pattern helps distinguish it from the more common species C. trilineatus, which tends to 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.[4]
Behavior
Feeding
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 aquaria, they can be fed sinking pellets rich in insect and other invertebrate proteins, as well as live or frozen foods such as bloodworms, tubifex, and California blackworms (Lumbriculus variegatus). Although they will often consume sinking algae wafers, these are not considered to be nutritionally appropriate.
Breeding
 |
 | This article's tone or style may not reflect the encyclopedic tone used on Wikipedia. (April 2022) |
Sexing corys is not difficult provided they are well fed and in good condition. 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.
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.[5]
Corydoras fish spawn in an unusual position. They make a sort of "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.[6] The female then lays eggs into her pelvic fins. After mating, the female will place the eggs on a surface and repeat this process.
Corys are egg laying fish and will lay small, white, sticky eggs on all surfaces in the aquarium, often on the glass itself. Females lay many eggs at a time though, the catfish will eat most of the eggs unless removed.
In Aquaria
Corydoras julii are small, unaggressive fish. They are shoaling fish,[3] and are typically kept in groups when in captivity. They are rarely available commercially. Fish labelled as "julii corys" for sale are often in actuality misidentified C. leopardus or C. trilineatus.[7]
References
- ^ "Corydoras julii summary page". FishBase. Retrieved 2019-01-07.
- ^ "Corydoras(ln9) trilineatus • Callichthyidae • Cat-eLog".
- ^ a b "Corydoras julii • Callichthyidae • Cat-eLog - PlanetCatfish.com". www.planetcatfish.com. Retrieved 2019-01-07.
- ^ "Corydoras(ln9) julii • Callichthyidae • Cat-eLog". PlanetCatfish. 2020-10-22. Retrieved 24 May 2021.
- ^ "Captivating Cory Catfish | Tropical Fish Hobbyist Magazine". Home | TFH Magazine. Retrieved 2022-05-12.
- ^ "Captivating Cory Catfish | Tropical Fish Hobbyist Magazine". Home | TFH Magazine. Retrieved 2022-05-12.
- ^ "Corydoras julii • Callichthyidae • Cat-eLog - PlanetCatfish.com". www.planetcatfish.com. Retrieved 2019-01-07.
External links
- Froese, Rainer; Pauly, Daniel (eds.). "Corydoras julii". FishBase. December 2011 version.
- [1]