I am pretty much all Rio Xingu Hypancistrus from the Big Bend. I am not sure what the 172a is. A search on planet catfish for "golden vampire: directs to Leporacanthicus heterodon. However their L number catalogue does not show 172a at all.
I'm pretty sure it is Leporacanthicus heterodon ; the reason i prefer these over some species is they are more likely to be out and about (seen)....I am pretty much all Rio Xingu Hypancistrus from the Big Bend. I am not sure what the 172a is. A search on planet catfish for "golden vampire: directs to Leporacanthicus heterodon. However their L number catalogue does not show 172a at all.
Some answers:Are the rummies adult size yet? Your huge tank makes them seem young. How big are the festivums? Adults could eat them especially if they hadn't been kept with much smaller fish before. But adult rummies should be ok with angel & festivums. Tetras might be safer & feel safer once you have more plants.
My few ancient "hand me down" rummies know my husband feeds them differently than I do. They beg him; I feel like I almost get an "is this the best we get today? Where's the old guy? We can wait..." dirty look, lol. "What? Repashy gel food & we have to share with the cories? (sigh, ok)". They were bolder & not so fussy when I had more of them & more plants.
I agree, your "mature" sponge filter is likely good enough for cycling a few tetras in a giant tank. I've done the "silent cycle" with many more plants, fewer fish in a smaller tanks. There's nothing to measure...Can you add a lot more plants, a few fish slowly or "used" filter media as you go along?
oh & I forgot what a pia angel means, please tell me again, PITA? Sometimes they are...
I'll put the festum with the clown loaches (black 10x4) and put the krobia with the rummy. Eventually the geo will get large and in a few years they might go after the rummy but they will be the only thing capable of eating them. I kind of like the idea of a large school of rummy swimming back and forth et all...Eek! If they bite off cherry barb heads your rummies are in trouble. Do you think the corys will be ok? I think we only had 1 festivum for a short time. No sign of biting smaller fish AFAIR.