uhhm the two blocks are 100 red ice (ice/crimson) each and theyre both covered with lizahrd blocks so that'll be 80+ lizahrd blocksI'd need an exact (biome) block count to be sure, but it looks like you'll be able to get jungle, frozen and either hallowed or crimson keys, depending on what type of tint that ice has. If there's one big block of each then you won't be able to get either of those, because they cancel each other's counts out. http://terraria.wiki.gg/Guide:Artificial_biomes
Not idea about the efficiency of your fish farm, of course. Got a water candle there somewhere, at least?