heres pics of them in a tank with white gravel.
and pics of them in a tank with sand and gravel.
gravel is in with the sand for the coolie loaches.
the sand darters and loaches have already been in them.
but before i can take a pic they run.
if i can catch one in a cave i will post it.
and making a big one like these white ones would collapse.
i dropped a white one and its still together,but there a bit weak.
still do there job tho.