I posted a while back about fish eating my plants, so replaced a lot of them. My tank is 60ltr and I have 6 black neons, 5 harlequin Rasbora, and 5 zebra Danio there are also a number of amano shrimp and striped snails. Since replacing my plants the new ones have grown quite large, Anubis, Amazon sward and java fern. My question is can you over plant a tank? And would it stress the fish? I ask because one of my guys has started showing signs of Dropsy, erratic swimming.