This fish was discovered in 1989 by an american team, in the Nosivolo River, Mangoro system, at the level of the village of Marolambo, that is at the same location as Oxylapia polli. However, contrary to the latter, Pts. katria prefers calm water reaches of the river.
According to Patrick de Rham and Jean-Claude Nourrisat in their book name "The endemic cichlids of Madagascar", the talk about this species tellin literaly the following paragraph:
"Pts. Katria is a much smaller species than Pts. betsileanus: the largest adult not reaching more than 14 cm. At the end of november 1995, that is one month later in the year than on our first visit, (1994). P. de Rham returned to Marolambo. On this occasion, he had the opportunity to watch several pairs guarding their eggs or fry. The egg plates were attached to exposed rocks, situated just below the surface. - - - Katria (local name) is presently bred in Florida, the captive line descending from fry that was brought back from Marolambo by Oliver Lucanus in 1995. Altough not colourful, this quaint cichlid of moderate size should attain some popularity among aquarist, as the silhouette of the male with its pronounced frontal hump and the black vertical bands make it quite attractjve.- - - "
I hope this information will help everyone to understand better this great species, greetings