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The Sturgeon fingerlings 9days old 10mm sized.  The Sterlet (Acipenser ruthenus). Extremely closeup - microphotography.
Pacific herring swimming in the aquarium
Pirarucu (Arapaima gigas) - Amazon River Basin fish
Squirrel fish on white background
Xenacanthus was a carnivorous marine shark that lived in Devonian and Triassic Period seas.
The three-spined stickleback (Gasterosteus aculeatus)
Asian knifefishes or featherbacks. chitala lopis in aquarium
Painted Comber, small seabass grouper fish family Serranus Scriba, of Serranidae family from Mediterranean, on light blue background
Computer generated 3D illustration with the prehistoric shark Orthacanthus
Sea life  Trachurus fish Underwater  Mediterranean sea Scuba diver point of view. Jack mackerels or saurels fish. Night shoot.
so called king of herrings source of sea serpent sightings
honeybee worker leg composite W.M. under light microscope with white background
Zebra loach catfish Botia striata aquarium fish
Vernal pool tadpole shrimp or Tadpole Shrimp, Lepidurus parkardi, Jepson Prairie Preserve, California, found in Vernal Pools
3d illustration of a eusthenopteron
Red tailed catfish
Dipterus is an extinct freshwater lungfish from the Devonian Period of Australia and Europe.
Hexagrammos lagocephalus is a colorful marine fish with the common name rock greenling in the greenling family.
Ancistrus Tropical fish, Bristlenose catfish, Cleaner Fish on the glass
bogue seabream species is found off the coasts of Europe, Africa, the Azores and the Canary Islands, from Norway to Angola, and in the Mediterranean and Black Seas.
Weather loach (Misgurnus fossilis) on the background of a 5 mm measurement grid. Ichthyology research.
Photo of Flathead grey mullet, a juvenile saltwater fish, against a black background.
Painted Comber, small seabass grouper fish family Serranus Scriba, of Serranidae family from Mediterranean, on light blue background
Bawitius (Upper Cretaceous)
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.
Gambusia is a large genus of fish in family Poeciliidae.
Pseudotropheus johannii or the bluegray mbuna. Isolated in black
Coelacanth fish was thought to be extinct but several living specimens have found to still exist in tropical seas.
Ochre-striped Cardinalfish Ostorhinchus compressus (ex Apogon compressus) occurs in the tropical Indo-West Pacific from Malaysia east to Palau in Micronesia and the Solomon Islands, north to the Ryukyu Islands and south to the Great Barrier Reef in a depth range from 2-20m, max. length 12cm, common length 8.5cm.\nThe nocturnal species is found in small aggregatations among or near mounds of branching corals. Ochre-striped Cardinalfish is a mouthbrooding species with distinct pairing during courtship and spawning. \nTriton Bay, Kaimana Regency, Indonesia, \n3°56'17.7941 S 134°7'10.2802 E at 2.5m depth
Free Images: "bestof:Labrisomid.png Auchenionchus microcirrhis a species of w labrisomid From Jenyns L 1842 Fish In C Darwin ed The zoology of the voyage of H M S Beagle under the"
Pieter_Brueghel_the_Elder_-_The_Dutch_Proverbs_-_Google_Art_Project.jpg
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Semicossyphus_darwini.jpg
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Heteroxolmis_dominicana.jpg
The zoology of the voyage of H.M.S. Beagle BHL40299473.jpg
Diplolaemus_darwinii.jpg
Upercerthia_dumetaria.jpg
Xanthopsar_flavus.jpg
Tanioptera_variegata.jpg
Agriornis_micropterus.jpg
Agriornis_leucurus.jpg
Pachyramphus_albescens.jpg
Pachyramphus_minimus.jpg
Mimus_trifasciatus.jpg
Mimus_melanotis.jpg
Mimus_parvulus.jpg
Opetiorhynchus_lanceolatus.jpg
Falklandwolf_Dusicyon_culpaeus.jpg
Passer_iagoensis.jpg
Melanodera_xanthogramma_xanthogramma.jpg
Melanodera_melanodera_melanodera.jpg
Glossotherium Owen 1840 - Holotype.jpg
Poospiza_nigrorufa_nigrorufa.jpg
Zenaida_galapagoensisGould.jpg
Coturnicops_notata_notata.jpg
Laterallus_spilonotus.jpg
Chloephaga_melanoptera.jpg
Hymenops_perspicillata_perspicillata.jpg
Myiarchus_magnirostris1.jpg
Passer_iagoensis_crop.jpg
FMIB_47237_Diodon_maculatus_(Distended_and_Contracted).jpeg
Buteo_galapagoensis.jpg
Thraupis_bonariensis1.jpg
Phyllotis_darwini.jpg
Darwin_Zoology_of_the_Voyage_of_HMS._Beagle_Band1_Teil1_1838.jpg
MilvagoAlbogularisBirdsDarwin.jpg
ProgneModestusDarwin.jpg
StrixPunctatissimaDarwin.jpg
TyrannulaMagnirostrisDarwin.jpg
Toxodon-Schaedel.jpg
Geospiza_magnirostris.jpg
Darwin_letter_1860_(2).jpg
White-throated Treerunner - Gould.jpg
White-throated Treerunner - Gould (cropped).jpg
FMIB_47238_Confervae.jpeg
FMIB_47239_Catamaran_(Bahia).jpeg
FMIB_47243_Cabbate_Palm.jpeg
FMIB_47293_Patagonian_Bolas.jpeg
FMIB_47295_Cyttaria_Darwinii.jpeg
FMIB_47313_Chilenos.jpeg
FMIB_47327_Tahitian.jpeg
FMIB_47339_Corals.jpeg
FMIB_47344_Cicada_Homoptera.jpeg
HMS_Beagle_by_Conrad_Martens.jpg
FMIB_47234_Sailing_ship.jpeg
FMIB_47235_Fernando_Noronha.jpeg
FMIB_47242_Virgin_Forest.jpeg
FMIB_47244_Mandioca_or_Cassava.jpeg
FMIB_47245_Rio_Janeiro.jpeg
FMIB_47252_Bringing_in_a_Prisoner.jpeg
FMIB_47253_Irregular_Troops.jpeg
FMIB_47257_Mate_Pots_and_Bambillio.jpeg
FMIB_47258_Giant_Thistle_of_Pampas.jpeg
FMIB_47259_Cynara_Cardunculus,_or_Cardoon.jpeg
FMIB_47260_Evening_Camp,_Buenos_Aires.jpeg
FMIB_47261_Rozario.jpeg
FMIB_47274_Head_of_Scissor-Beak.jpeg
FMIB_47276_Bueons_Ayres_Bullock-Waggons.jpeg
FMIB_47281_Condor_(Sarcorhamphus_gryphus).jpeg
FMIB_47285_Cape_Horn.jpeg
FMIB_47286_Cape_Horn.jpeg
FMIB_47294_Patagonian_Spurs_and_Pipe.jpeg
FMIB_47298_Flora_of_Magellan.jpeg
FMIB_47300_Trochilus_forficatus.jpeg
FMIB_47302_Chilian_Miner.jpeg
FMIB_47308_Gunnera_Scabra,_Chiloe.jpeg
FMIB_47311_San_Carlos.jpeg
FMIB_47314_South_American_Bit.jpeg
FMIB_47317_Coquimbo,_Chile.jpeg
FMIB_47318_Huacas_Peruvian_Pottery.jpeg
FMIB_47319_Testudo_Abingdonii,_Galapagos_Islands.jpeg
FMIB_47320_Galapagos_Archipelago.jpeg
FMIB_47322_Blyrhynchus_cristatus_a,_Tooth.jpeg
FMIB_47329_Sydney,_1835.jpeg
FMIB_47338_Bolabola_Island.jpeg
FMIB_47340_Birgos_Latro,_Keeling_Island.jpeg
FMIB_47342_St_Helena.jpeg
FMIB_47343_Cellular_Formation_of_Volcanic_Bomb.jpeg
FMIB_47345_Homeward_Bound.jpeg
FMIB_47347_South_America.jpeg
FMIB_47240_Botofogo_Bay,_Rio_Janeiro.jpeg
FMIB_47247_Hydorchaerus_Capybara_or_Water-Hog.jpeg
FMIB_47248_Recado_or_Surcingle_of_Gaucho.jpeg
FMIB_47249_Halt_at_a_Pulperia_on_the_Pampas.jpeg
FMIB_47251_Brazilian_Whips,_Hobbles,_and_Spurs.jpeg
FMIB_47254_Skinning_Uji_or_Water_Serpents.jpeg
FMIB_47256_Landing_at_Buenos_Aires.jpeg
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