So am thinking about collecting a kind of fish again. Similar to when I collected catfish as many of you know. In my 29g I have my axolotl And he's kind of lazy as most are and just sticks to the bottom really. I experimented with guppies with him and he doesn't care at all. And they dont bother him. I was thinking about doing tetras the same way I did catfish and got a few small tanks dedicated to them. I have the 29 and a 10 atm thinking of kind of using rocks to seperate the bottom and top of the tank with rocks and of course he will be able to come up it would just be a lot of hiding spots at the bottom for him to hide. But at the top have like my guppies and was thinking like serpae and some skirt tetras. and for my 10 I was thinking orca catfish and maybe some small tetras like ember, neon or lemon. What are your guys thoughts and suggestions???