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Chonerhinos modestus is rarely seen in the local fish shop. I originally
thought mine were Xenopterus naritus, but upon finding more photos
in colour, I now know them to be C. modestus.
They seem to be piscivores, eating other fish happily. Other activities may
also include fin nipping and scale eating of fish too large for them to kill
outright. My particular individual Was happy eating brine shrimp, mysis, bits
of krill and raw shrimp, and whatever else I put into the tank. He was housed
alone, due to the aggressive nature he possesses.
He did seem to have a rather frantic personality, obtaining the pictures
above was a challenge as he is always on the move, usually the up and down
against the glass routine. The teeth are very pointed and protrude out from
the lips. As a result, any flat object is given precise cookie cutter holes.
They do not tolerate being housed with their own species, and I did find
this out the hard way. Initial observation of interaction showed tolerance
as juveniles, but as they matured, fights over food items became more frequent.
Before I could house them separately, the larger individual killed the smaller.
I am still seeking more information about this species, but there just are
not many references available.