So if he removes the top does that limit the type of fish he can get in there. Are there types of fish he should avoid they would potentially jump out of the water. I know in his 32 gallon bio cube he had diamond gobies , which we know are known for jumping, and we lost two of them Behind the filtering of the bio cube. Luckily, we were able to find them and keep them alive temporarily but I have no issues with it not having the lid just would wanna make sure we don’t risk any fish jumping out.