Bladderwort is a plant which looks like a tangled mass of light green cotton, with small knots connected to the strands, as though someone has attempted to untangle it and lost patience. The knot-like appendages are small bladders which trap microorganisms.
This plant is best for spawning surface egg layers and as a protective maze for very young livebearers, being even of a closer formation than Riccia.
When using bladderwort it is advisable not to have any other floating plants in the very same tank, as they will turn out to be hopelessly entangled with each other.