mexican dwarf crawfish

I’ve read a bit about mexican dwarf crays and have seen mixed reviews on them, from people praising them for being docile to others saying they’ll be aggressive towards my betta. If I were to get one, he’d probably go in my 6.8 gallon with my oldest betta (who probably wouldn’t even notice the...

Hi. So in a few months I'm going to be moving into dorm. Said dorm only allows us to keep fish in an 10 gallon tank. I'm guessing that a crawfish would fall into the category of technical fish, but just to be safe, I'm planning on getting the little guy a tank mate so that I can say he's there...