A large stonefly sits on organic debris in a collection filter. Stoneflies are intolerant of toxic substances and require clean, cool, well-oxygenated water.
Stoneflies are intolerant of toxic substances and require clean, cool, well-oxygenated water.
A large stonefly sits on organic debris in a collection filter. Stoneflies are intolerant of toxic substances and require clean, cool, well-oxygenated water.