Hypancistrus sp. L411

Photo: Ole Paulsen


For some time this species was known as H.sp.“Monte Dourado”, named after the city near it’s natural habitat in Rio Jari, Brazil. These days it’s slowly diminishing in the hobby, as no new wild stock is supplied to the trade. L411 is not allowed for export from Brazil, and there’s no commercial fishing going on in Rio Jari any more. As with several other species, L411 was somewhat taken for granted before, and considered an easy to breed / hard to sell Hypancistrus in the great mix of choices. Now it’s kept in the hobby only by a few enthusiasts.


Name: Hypancistrus sp. “L411”

Trade names: L411, H.sp.“Monte Dourado”

Origin: Rio Jari, Brazil.

Maximum size: 14 cm / 6”

This species can be confused with L260 from Rio Tapajos. However, L411 grows larger and has an even denser pattern of thinner lines.

In young fish, the pattern of L411 can be very striking, with clear, black lines against a very light, golden body. 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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