Just wanted to share a little about my yo-yo loaches...
I have three, and they are all new, about two or so weeks in my tank. Two of them formed a "couple" immediately...the third would go off and hide in the plants. He'd hide so well I'd have to look for him for a while before I could find him! I thought he must be sick and any day he's going to die.
Anyway, the two lovers had started out very feisty, in fact they all had. Zipping around the tank, up and down and back and forth. It was fun to watch.
Once the lovers found each other, they started hanging out together more and more. I started to worry because I would find them separated with the lazier one lying on it's side looking dead. The other would be zipping around as usual. Then I'd go back a while later and the other would have joined the lazy one. They would lay side by side, sometimes on a perch, sometimes near some driftwood. When the lazy one would start to drift off of the perch, the other would nudge it awake and they would reposition themselves on the ledge.
For a while I worried...I had this lazy one who looked half dead all the time, and the third one was always hiding and still. Did I buy sick loaches?
Well, the last week has seen the eruption of a full blown love triangle. The lazy and the shy ones, along with the zipper, all now hang out in one big happy group, swimming together, going off to hunt, and then re-convening like old friends. They just had to find their own niches in the tank, and now they are a harmonious triad.
I love watching the relationships in bloom.