I have a 32G Biocube with 2 zebra Dartfish, a sharknose goby, and a yellow assessor. I purchased the sharknose because he was said to not be aggressive and I thought his cleaner tendencies would not be a negative aspect. Well, he is a bully! He attacks all the fish and us every time we put our hand in the tank. At 1.5” he bully’s the 5” dartfish and they have gone to hiding in their home except for at feeding time. Does anyone have experience woth these small and fiesta fish?