dwarf crocodile osteolaemus tetraspis

africa african animal animals bony broad covered crocodile crocodiles crocodilia crocodylidae dirty drift driftweed duck duckweed dwarf fauna flora fresh freshwater green head lake lemna life marsh marshland minor mud natural nature one osteolaemus overgrown plant pond reptile reptiles reptilia river snouted surface swim swimming terrarium tetraspis texture textured underwater vegetation water weed wild wildlife zoo