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The three-spined stickleback (Gasterosteus aculeatus)
Rainbow shark catfish Epalzeorhynchos frenatum aquarium fish isolated on white
A fish The three-spined stickleback (Gasterosteus aculeatus) on the background of a 5 mm measurement grid. Ichthyology research.
Pacific herring swimming in the aquarium
Port Jackson Glassfish, (Ambassis jacksoniensis), Narooma, NSW, January 2023
My home fish tank
Panda garra freshwater fish - Garra flavatra
Fish skeleton on black background
Stone moroko (Pseudorasbora parva), also known as the topmouth gudgeon. Wild life animal.
Cleaner fish in an aquarium or a fish tank.
The European bitterling (Rhodeus amarus) color male in natural habitat
Channa Orna Fish In Aquarium
Clown killi banded panchax killifish fish Male Epiplatys annulatus tropical aquarium fish
Sammara squirrelfish swimming
Fresh raw tropical flying fish isolated on white background
Cichlidae
Bala Shark, balantiocheilus melanopterus
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.
Ancistrus Tropical fish, Bristlenose catfish, Cleaner Fish on the glass
the tail of a redfish
Bumblebee goby Brachygobius doriae gobies tropical aquarium fish
Sea life Gavun ( lat.  Atherina hepsetus ) fish Underwater  Mediterranean sea Scuba diver point of view
Photo of Flathead grey mullet, a juvenile saltwater fish, against a black background.
Underwater swimming two common rudd fish (Scardinius erythrophthalmus) together at the bottom of a lake.
Macro Photography. Animal Close up. Macro shot of Synodontis nigriventris catfish in the aquarium. Fish on tanks. Shot in Macro lens
Pacific halibut swims in the aquarium
little  stickleback on white background
Showing fire-headed Cichlid fish (cichlasoma synspilum, vieja synspilum) in aquarium
Clown killi banded panchax killifish fish Male Epiplatys annulatus tropical aquarium fish
The Pajama (Pyjama) cardinalfish, Sphaeramia nematoptera, is a species of fish belonging to the Apogonidae family. Distributed throughout much of the West Pacific, from Java to Fiji, and from the Ryukyu Islands south to the Great Barrier Reef. In Pajama cardinalfish, males incubate the eggs in their mouth until they hatch.
Free Images: "bestof:CyphorinusDichrousSmit.jpg Cyphorhinus thoracicus dichrous Thryothorus thoracicus http //www archive org/stream/proceedingsofgen792zool page/n242/mode/1up"
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