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Planarian parasite (flatworm) under microscope view.
Red sea bream on white background
red-blue Columbian Tetra Hyphessobrycon aquarium fish
Bluefish Over Gray Background
centropyxis aculeata (amoeboid organism) under the microscope - optical microscope x400 magnification
Goldfish on a white background
discus  fish in tank
Goldfishes isolated
Freshwater fish isolated on white background. Known as common, redfin, largescale, Eurasian or European perch, this fish is a predatory species of perch, species: Perca fluviatilis.
Male common whitetail (Plathemis lydia) on rock. A North American dragonfly.
Rasbora Het Harlequin rasbora heteromorpha lamb chop rasboras aquarium fish
Dash-and-dot goatfish Parupeneus barberinus occurs in the tropical Indo-Pacific from the Gulf of Aden and Oman, south on the east coast of Africa to Mossel Bay, South Africa, east to the islands of Micronesia, Line Islands, Marquesas Islands, and Tuamotu Archipelago, and from southern Japan to Australia and New Caledonia in a depth range from 0 to 100m, max. length 60cm, common length 30cm. \n\nIt is one of the most abundant species of Parupeneus. Adults, solitary or in small groups inhabit large sand patches as well as sand and rubble areas of reef flats, and lagoon and seaward reefs. \n\nThis specimen was encountered at night in its nocturnal coloration, when black and red being essentially invisible colors. \n\nTriton Bay, Indonesia, \n3°54'2.455 S 134°6'23.699 Eat 4m depth by night
Goldfish isolated on white background. Goldfish side view
Monotomidae, Coleoptera Fossil in Burmese amber of Cenomanian era, 100 million years ago, from the state of Myanmar, extreme macro shot
Liver Fluke Section under light microscope with white background
The West Indian Ocean coelacanth, sometimes known as the African coelacanth is one of two extant species of coelacanth, a rare order of vertebrates more closely related to lungfish, reptiles and mammals than to the common ray-finned fishes.
Goldfish in the aquarium
Ruby fish. Isolated on white background
Colorful goldfish with red head on white
Cheilocostus speciosus or Crepe ginger seeds on white background
Photomicrograph of flatworm,
Fish Of India, Backwater Kerala. Goby fishes (Gobius). Freshwater gobies and fish living in estuaries
Vibrant betta fish swimming.
A close-up of an Oscar fish with orange and white scales on a dark background
Chiton, Tripoplax regularis. on a rock at Salt Point State Park in Sonoma County, California.
Odessa barb Pethia padamya freshwater aquarium fish
Isolated in black
Fresh lizardfish or wanieso saurida isolated on white background
Koi are colored varieties of the common carp that are kept for decorative purposes in koi ponds or water gardens.
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