rope fish close up

addition aquarium aquariums aquatic bichirs bizarre bladder body bony calabaricus close content dissolved distinct elongated erpetoichthys fascinating features fish fishes flattened form found fresh freshwater gulp head including like looking lungs many modified moving obtain oxygen pair pattern pet pets physical primitive related relies reticulated rope scale scales slow standing surface swim that thick this trait unusual uses vital water waters weird with macro closeup nikon eel eels