Corydoras blochi , Nijssen, 1971
Origin:South-America, Guyana, Essequibo, Moco Moco Creek, tributary of Rio Catuca, Rio Branco sytem(also Brazil), Rio Essequibo system. Venezuela, rio Orinoco system.
Etymology: Named after M.E. Bloch.
Synonyms: Corydoras blochi blochi
First import:E. Ledecky-Janacek, 1968.
Description: See pictures(debatable whether it really is a C. blochi blochi!).Bodycolor beigebrown, black mask over the eyes, small spots on the body that form horizontal lines, smal spots on the caudal fin that form 6-10 vertical lines. Dark blotch at the base of the dorsal fin, extending into the spine of the fin.
Care:A 60 cm tank with reasonable current. Watervalues of minor importance, since the fish occurs in many different habitats. Keep them in groups of 4-10 fish, no sharp gravel and preferrably an area of sand to feed.
Feeding:Like all corydoras they need food, since they cannot survive on detritus alone. Will take all general aquariumfood.
pH: 6.0-7.5 Hardness: 2-20
Breeding:A 60 cm tank with a ratio 2-3 males per female. Feed them well for a while and then change a large portion of the water with colder water. If they don't breed immediately, repeat this for a period of time. Wildcaught fish may sometimes only reproduce in the rainseason in the country of origin.
Sexual dimorphism:Males are shorter and smaller than the females.
Additional:Old comment on this page: "There is another subspecies, vittatus. With todays standards for describing species it would probably have been described as a separate species." Well, the species have been separated into Corydoras blochi and Corydoras vittatus!
Picture references: All pictures: E. Naus
References:Lambourne, D. ((1995): Corydoras catfish, An Aquarist's Handbook. Blandford, London, UK.Hierronimus, H. (1997): Ihr Hobby: Corydoras Pantzerwelse. Bede Verlag, Ruhmannsfelden, Germany.
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