Are Plants Bad For Fish?

Are Plants Bad For Fish? Plant Name Toxic Parts Azalea (Rhododendron spp.) All parts Black walnut (Juglans nigra) All parts Bleeding heart (Dicentra spp.) Leaves, roots Is too much plants bad for fish? Can an aquarium have too many plants? Generally not, but in specific circumstances, large amounts of plants can make small problems worse.

Are Philodendrons Poisonous To Fish?

Are Philodendrons Poisonous To Fish? Many fish are sensitive to the oxalates found in philodendron leaves, which could prove fatal to them if they’re exposed to high concentrations of it over a long period of time. In general, because philodendrons are grown with only the non-toxic roots submerged in water, your fish will be safe.