presumably native to the Ken'ryllah homeworld and introduced to The Nascent with the flooding of that realm.

'A score of broad-limbed catfish had clambered onto the mud-caked wall, none less than two man-lengths from blunt head to limp tail...their silvery bellies...Their skins had dried and fissures were visible in a latticed web across their dark backs. The glitter of their small black eyes was muted beneath the skin's crinkled layer...Only a short time ago, these fish had possessed no true limbs. He (Onrack) was witness, he suspected, to a metamorphosis'(HoC, UK MMPB, p.321-2)

'The slaying triggered a frenzy among the others. Skin split, sleek four-limbed bodies tore their way free. Broad, needle-fanged heads...tiny eyes glistening. Loud hisses...The beasts moved on squat, muscular legs, three-toed feet thickly padded and clawed. Their tails were short, extending in a vertical fin back up their spines...They attacked as would wolves closing on wounded prey.'(HoC, UK MMPB, p.327-8)