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Female and Male (on background) of Great Crested Newt (Triturus cristatus). Male's skin color and crest is typical for breeding time.
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.
Rainbow shark catfish Epalzeorhynchos frenatum aquarium fish isolated on white
Red tailed catfish
Weather loach (Misgurnus fossilis) on the background of a 5 mm measurement grid. Ichthyology research.
Channa maculata swimming in fish tank. An omnivorous fish that lives in the Mekong Delta is used to feed farmers during floods
Pirarucu (Arapaima gigas) - Amazon River Basin fish
Pompano tail close-up
Rainbow fish swimming in a tank
Pacific halibut swims in the aquarium
Fresh eel
African jacana in the wetland where it belongs, this one is seen in the Okavango National Park in Botswana
Golden Ancistrus pleco catfish Male albino Bristle-nose tropical freshwater aquarium fish
Red snapper on white background
Skeleton side look macro closeup photography of the rare \
Aquarium tropical fish: otocinclus
Unique ancient lungfish, surviving from the Jurassic period. Lives in reservoirs with stagnant water, often drying up and overgrown with aquatic vegetation. In the dry season digs in the ground \
Pacific Banana Slug, Ariolimax columbianus, Salt Point State Park, California. Sonoma County.
Hamo, Japanese food ingredients, summer Kyoto cuisine, photographed on white background
Arowana in aquarium, a favorite fish with long body, beautiful dragon shape colorful for decoration in the aquarium in rich family
Ptereleotris evides, the Blackfin dartfish, occurs in outer reef slopes, also inhabits lagoons and bays. Usually in pairs as adults and in small aggregations as juveniles. High quality photo
Aquatic (fresh water) nematode living in pond water among cyanobacteria. Live specimen. Wet mount, 10X objective, transmitted brightfield illumination.
exotic aquarium fish astranatous with close-up
Axolotl. Mexican walking fish. Ambystoma mexicanum
When the catfish pond is drained, we can see the catfish clearly. The catfish in the pond began to move and run to find a water source. catfish is delicious to eat.
A beautiful goldfish swimming in an aquarium,
Panda Tetra dawn tetra Aphyocharax paraguayensis aquarium fish
Hexagrammos lagocephalus is a colorful marine fish with the common name rock greenling in the greenling family.
Palmate newt, Triturus helveticus, single male under water
Tropical fish swimming in the aquarium
Free Images: "bestof:Parapodisma tanzawaensis 001 Male.jpg Male of Parapodisma tanzawaensis Tominaga et Wada 2001 Acrididae Melanoplinae from Yokohama Japan Own 2013-08-17 PD files"
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Oxya yezoensis November 2007 Osaka Japan.jpg
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