I was reading an article earlier about rare tropical fish and was gobsmacked because it seems that there are many fish we keep that are very common in the hobby but are virtually extinct in their natural environment. The two that surprised me most, mainly because i have them in my tanks, were the humble bala shark and dennison barb. The balas are mega rare in the wild and apparently dennisons are close to extinction! The only reason we have them in our tanks is because of the fish farms that breed them. I was wondering if anyone else has heard or read of any similar stories regarding other species of seemingly common species that are in fact struggling in their natural habitat.