Is acrylic paint harmful to fish? When you use acrylic paint in aquariums, even though it appears to be non-toxic, the pieces that flake off as the acrylic breaks apart can be poisonous to your fish. It is no different for your fish to view tiny pieces of acrylic as flakey fish food, which can be extremely harmful to them.
Is acrylic paint safe for fishes? Acrylic paint is a non-toxic and a water based paint, so in most cases it’s not toxic to fish. Acrylic paint is usually the go-to paint when you need to have it near your fish. For bonding, I recommend this Krylon clear spray, it makes any painted item last, and it’s also not toxic to your fish.