He highlights the plight of freshwater fish on the red island:
“It should be painfully obvious to the reader from my earlier posts that Madagascar’s native freshwater fishes are in very serious trouble — narrow endemism and widespread habitat degradation are a dangerous combination. Throw in competition with an array of exotic species, and you have the ingredients for a full-blown disaster. Essentially, freshwater fishes are afforded little protection within the isolated patches of protected forest that remain throughout the country, and within which one can still find relatively healthy populations of lemurs, chameleons and other native vertebrates. Most of these forest reserves are at higher elevation, where there is little suitable habitat for fishes other than rheophilic gobioids (gobies and eleotrids). In addition, it is difficult, if not impossible, to find a watershed that has not been affected to some degree by deforestation throughout its course — and obviously, the negative effects of siltation persist downstream to the sea.”But its not just fish that are threatened in freshwater systems: The lac alaotran lemur is critically endangered and the Alaotra grebe has recently been declared extinct.
One thing in his post that intrigued me is his emphasis on tilapia and their importance to local livelihoods: