I have had an 80litre freshwater tank for about ten months now. I have 2 spiney eels, 3 bumblebee gobys, 3 bristlenose catfish and a fat, contented betta! I came across this site while browsing various problems in these fish (one of my eels is not doing so wel at the moment). And I am also looking for a freshwater fish that will eat small water snails.