Hypancistrus sp. L410

Photo: Kyanosh Basiri


L410 was presented in DATZ magazine in December 2007. It was claimed to be from Rio Jari, Brazil. It has never been proved to actually come from this river, and the similarity to various Xingu forms is striking.  These days it’s slowly diminishing in the hobby, as no new wild stock is supplied to the trade. L410 is not allowed for export from Brazil, and there’s not much commercial fishing going on in Rio Jari anymore. Some breeders in Germany have been able to keep the line available in the hobby since it first arrived on the scene.


Name: Hypancistrus sp. “L410”

Trade names: L410

Origin: Rio Jari, Brazil.

Maximum size: 14 cm / 6”

This species can be confused with L399 and L400 from Rio Xingu. L-welse.com states that L410 seem to have larger/more elongated fins. Until we are presented with proof that L410 really does come from Rio Jari, it’s very plausible that the original specimens were actually Xingu fish.

Some individuals show a mutated pattern of fewer black lines. Adult specimens, males in particular, can become very grey and dull coloured with their body almost covered in odontodes.

They need an aquarium set up consisting of lots of hiding places in the form of rocks, wood and of course specially made caves that suit their measurements. In these the males will eventually guard their offspring. They prefer water that is fairly warm (27-30 C), soft and slightly acidic. Most of all it should be well oxygenated and clean, so a good filtration system and frequent water changes are essential. Among themselves they are fairly peaceful, although males may quarrel for caves and females can sometimes be badly injured or even killed during the breeding-trapping in the male’s cave. Males develop longer odontodes on their pectoral fins and on their cheeks, and have broader heads. Hypancistrus are mostly carnivorous, so a selection of crustaceans, insect larvae and fish meat should be offered along with high quality dried foods that also contain some vegetable matter.

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