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Close Up of Shortfin eel ,Anguilla bicolor isolated on white background
Curious eurasian otter (Lutra lutra) looking up in a stream.
The reedfish, ropefish (more commonly used in the United States), or snakefish, Erpetoichthys calabaricus, is a species of fish in the family Polypteridae alongside the bichirs. It is the only member of the genus Erpetoichthys. It is native to fresh and brackish waters in West and Central Africa. The reedfish possesses a pair of lungs in addition to gills, allowing it to survive in very oxygen-poor water. It is threatened by habitat loss through palm oil plantations, other agriculture, deforestation, and urban development
Endemic to New Zealand, the Longfin Eel (Anguilla dieffenbachii) is the largest freshwater eel in New Zealand and the only endemic species.
Mudskipper (Pseudapocryptes elongatus) is natural fish, this is delicious fish so that ussualy use i Viet Nam.
Aquatic (fresh water) nematode living in pond water among cyanobacteria. Live specimen. Wet mount, 10X objective, transmitted brightfield illumination.
Fish in the thickets of seaweed. Broadnosed pipefish (Syngnathus typhle) is a fish of the Syngnathidae family (seahorses and pipefishes)
These garden eels are hovering over the sandy bottom of their aquarium.
Asian swamp eel Monopterus albus isolated on white background
Axolotl. Mexican walking fish. Ambystoma mexicanum
The eel on the bottom of the Krka River in Croatia
Feeding time for Longfin eels at an aquarium. The Longfin eel can be found throughout New Zealand in rivers and inland lakes.
Close Up of Eel Swimming in Lake In Auckland New Zealand
Colorful Coral Reef Teeming with Exotic Fish. Lively and colorful coral reef in a vibrant underwater world. Diverse array of tropical fish swimming freely in their aquatic environment, creating a mesmerizing scene for nature and animal enthusiasts alike.
Selective focus of The zig-zag eel (Mastacembelus armatus), also known as the tire-track eel, tire-track spiny eel or marbled spiny eel.
Zebra Moray, Gymnomuraena zebra,  from southern Baja California, Mexico,
Head of tortoise looing at camera
Aquarium tropical fish: otocinclus
Black Sea, European flounder (Platichthys flesus luscus) floats in the water column
Electric eel
Jundiara Catfish (Pseudoplatystoma sp x Leiarius marmoratus) - Hybrid Freshwater Fish
Gymnotus electricus
New Zealand Longfin Eel in the River
Giant moray eel, underwater Gymnothorax miliaris
New Zealand Long fin eel gathering in stream writhing and slimy.
The Arctic grayling (Thymallus arcticus) is a species of freshwater fish in the salmon family Salmonidae. T. arcticus is widespread throughout the Arctic and Pacific drainages in Canada, Alaska, and Siberia, as well as the upper Missouri River drainage in Montana.  Wyoming.
Electric eel (Electrophorus electricus)
Curious eurasian otter (Lutra lutra) looking up.
Moray Muraena fish (Gymnothorax favagineus) hunting underwater. Blue water background.
Latticed Sandperch Parapercis clathrata occurs in the tropical Indo-West Pacific from India and Sri Lanka to Tonga, from the Ryukyu Islands and the Great Barrier Reef to the Marshall Islands and Samoa in a depth range from 3-50m, max. length 24cm. \nThis is a male specimen: only males develop a conspicuous ocellus on each side of the nape. Young are best identified by the patch of small spots on the cheek that usually remains evident in adults. \nTriton Bay, Kaimana Regency, Indonesia, 3°55'0.49S 134° 6'4.85E at 17m depth
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