several longfin eels in tshallow water at lake rotoiti in new zealand

anguilla anguillidae anguilliformes aotearoa beautiful body chordata dieffenbachii eel endangered endemic eye eyes fin fish fished food freshwater good horns hunter long longfin looking mobile mouth native nature new nostrils olfaction olfactory over predator reshwater risk rocks scary see sense sensitive sensors serpent slimy smell staring stones swim swimming taniwha threatened tube tuna water waterdwelling zealand