PlanetCatfish.com

as you may have seen, i've lately bought 2 Royals, one of them turned out to be a L190, because he had a "window" in his tail. well yesterday i looke at the other one, and i saw a very small "window". now here's my question:

do they develop the window, or is it there from the fry stadium. if they develop it, does it mean i have 2 L190 P. nigrolineatus(ses) or however you write it.

tnx in advance,

OEOTS

The "window" goes away as they mature.
-Shane

so the one with the smaller window is supposed to be older, thats possible, only he is about a centimeter smaller then the on with the big window. perhaps he hasn't developed in the right way? or is it a deifferent species?

The size of the window varies by population from river to river but almost always disappears entirely at adulthood. Photos would be helpful.
-Shane