I have several tanks in my classroom. At the end of last school year I took all my 'school' fish home. Our classrooms are not airconditioned and the temps get into the 90s. One of my freshwater tanks housed some Columbian tetras (Hyphessobrycon colombianus</em>). This morning I started working on my tanks for this coming school year. As I began topping off my tanks (evaporation) I saw an adult tetra in the tank. I had somehow missed this one last May. This fish has been in a room with elevated temps and NO food for 10 weeks! The really cool thing is there are at least 5 small tetras (<1") in there with it. These must have hatched over the summer. From what I can find online these fish are fairly hard to get to reproduce in captivity. All I guess they really need is to lay eggs, be separated and left in hot water. 
