Over the last couple of days i have noticed one of my powder blue tinctorius acting a bit strangely. I have two and they have been living together for about a year now.There is a obvious size differnce,i think they may be a pair.Anyway,over the last couple of days the smaller one has seemed to be uncomfortable with its surroundings and is climbing the glass alot and has slept upon the rim running just below the top of the tank. He just seems a bit unhappy overall.Any ideas what might cuase this and what i can do to sort it?
Cheers
Rob


