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Gambusia is a large genus of fish in family Poeciliidae. Gambusia contains over 40 species, most of which are principally found in freshwater habitats, though some species may also be found in brackish or saltwater habitats.
Dwarf cichlid male of Apistogramma Panduro
Trichopodus pectoralis,Colorful freshwater fish and food that tastes good
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.
Dorsal close up of northern dune tiger beetle, Cicindela hydrida on a sandy soil
Tropical fish swimming through the open water over coral reef
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.
Adult Assassin Bug of the Genus Doldina
Siamese fighting fish or Betta fish isolated
Red skunk cleaner shrimp - Lysmata Amboinensis
Rainbow fish swimming in a tank
Flower Cardinalfish Ostorhinchus fleurieu occurs in the tropical Indo-West Pacific from the Red Sea, the Persian Gulf, the Gulf of Oman and scattered localities in East Africa to Seychelles, India, Sri Lanka, the Indo-Malayan region, and Hong Kong; south to Australia; east to Fiji in a depth range from 1-97m ( usually 1-37m), max. length 14.2cm. The species is common in shallow coastal reefs with moderate currents, also in tidal channels of estuaries. Adults are usually in small schools comprising pairs. The mouthbrooders form distinct pairs during courtship and spawning. \nBelow there are two Spotted-gill Cardinalfishes Ostorhinchus chrysopomus. The species occurs in the tropical Indo-West Pacific from the Indo-Malay Archipelago to New Guinea and Solomon Islands in a depth range from 2-25m, max. length 10cm. \nTriton Bay, Kaimana Regency, West Papua Province, Indonesia, \n3°51'48.03 S 133°55'48.96 E at 6m depth by night
Cory catfish Corydoras duplicareus tropical aquarium fish
Close-up beautiful blue Siamese fighting fish, art of betta fish movement on black background.
Spikefin Goby - Discordipinna griessingeri
Tiny dragonfly (Zygoptera) perched on a leaf
Female and Male (on background) of Great Crested Newt (Triturus cristatus). Male's skin color and crest is typical for breeding time.
Aquarium tropical fish: otocinclus
discus  fish in tank
Orange fish
Photo of Golden sweeper, a juvenile saltwater fish, against a black background.
Aquatic (fresh water) nematode living in pond water among cyanobacteria. Live specimen. Wet mount, 10X objective, transmitted brightfield illumination.
Ornate bichir (Polypterus ornatipinnis), an African freshwater fish.
Channa maculata swimming in fish tank. An omnivorous fish that lives in the Mekong Delta is used to feed farmers during floods
Neon tetra fish
Redbreasted Wrasse Cheilinus fasciatus occurs in the tropical Indo-Pacific from the east coast of Africa and islands of the western Indian Ocean to Micronesia and Samoa and Tonga, north to the Ryukyu Islands, Japan and south to Queensland, Australia in a depth range from 4-60m, but usually not deeper than 40m, max. length 40cm. This specimen was encountered at the Iro Wreck, a 143 meter oil tanker wreck since March 1944, WWII, was ordered by the Japanese Navy during the 1920´s building programs. Although heavily overgrown with black coral and sponges, the torpedo hole is still clearly visible. The wreck sits upright between 15m and 36m of water. The outside of the ship has developed a nice coating of colourful invertebrates, mostly sponges and oysters. Palau 7°17'40.08 N 134°25'15.51 E at 20m depth
Costello tetra Hemigrammus hyanuary aquarium fish green neon
Rat tailed maggot photographed in a studio
Orthacanthus was a carnivorous freshwater shark that lived in swamps of the Devonian and Carboniferous Periods.
Tiny dragonfly (Zygoptera) perched on a leaf
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