PlanetCatfish.com

I have put a link to this paper in the Cat-eLog data sheet of P. granulosus.

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Mats

a very interesing read, to be recommended!

this confirms my own observtions. i've kept this prticular species from 2" up to 16" and the larger it gets, the more herbivorous it feeds

also; the migratory habits also show and this papers confirm; during the rainy season (september till march) this fish gets very lively in captivity.
wich makes sense, because it's supposed to migrate from the rivers to the now flooded forests to feed on terrestrial vegetayion

my own observations include the fact that it can and does feed on terrestric plants, wich is shown by the fact that even the toughest aquatic plants like cryptocoryne (wich contain a lot of silicates), java ferns, Anubias and Giant Vallisneria get eaten by the largest fishes.

small ones are already capable of feeding on aponogeton, echinodorus and hygriphila wich are all aquatic and more soft-leafed.