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The Sturgeon fingerlings 9days old 10mm sized.  The Sterlet (Acipenser ruthenus). Extremely closeup - microphotography.
Drosophila Larva W.M. under light mircoscope with white background
Photo of Tripletail, a juvenile saltwater fish, against a black background.
Goldfish swimming in the water with a black background photographed in Chengdu
Studio shot of chicken embryo
Photomicrograph of rotifer, probably Rotaria rotatoria. Rapidly rotating cilia at top of head, internal organs visible. Green circles are algae. Live specimen. Original image at 40X, wet mount, transmitted brightfield illumination. Indistinct image due to motion blur of live specimen and very shallow depth of field of brightfield illumination.
Artemia Salina - Brine Shrimp are food of Seahorses and many other Saltwater Animals
Shrimp in aquarium
Study of Parasitic helminths (Trematodes) of marine fishes under a microscope.
plant Zea Stem C.S. under light mircoscope with white background
Egg and new hatched larval fish with the yolk sac still remaining. Convict Cichlid. Amatitlania Nigrofasciata.
Vernal pool tadpole shrimp or Tadpole Shrimp, Lepidurus parkardi, Jepson Prairie Preserve, California, found in Vernal Pools
Fry of the Yangtze Killifish
Trematode parasite under a microscope
Artemia larvae in light microscope, Artemia plankton under a microscope.
Marsh Beatle Fossil in Baltic amber from Eocene era, 56 - 34 million years ago, Family: Scirtidae.
Water flea (Moina macrocopa) under light microscope view for biology education.
Photomicrograph of two rotifers. Rapidly rotating cilia at top of heads, internal organs visible. Live specimen. Wet mount, 10X objective, transmitted brightfield illumination.
Ostracod is a small crustacean found in a freshwater pond. Zooplankton, micro crustacean under the light microscope. Magnification of 100 times, microscope objective 10
Lepidurus packardi, the vernal pool tadpole shrimp, is a small, rare species of tadpole shrimp (Notostraca) found in temporary ponds of the western United States. Branchiopoda. Jepson Prairie Preserve, California.
A large group of tadpoles (Gavialis gangeticus) clustered in lake water
salt water tropical fish, yellow fish, angel fish, box fish, lamp fish, heart fish
Macro view on various cichlids (Cichlidae) swimming in the fish tank, with dark background
Squash preparation of  onion root tip cells stained to reveal chromosomes,  Bright field illumination, light microscopy.  This image was taken with the X40 objective lens.  Depth of focus is extremely low at this magnification.  Smaller apertures give greater depth of focus, but image quality deteriorates and resolution is greatly reduced.  The aperture in this image was optimised for contrast and resolution. Chromatic abberation is inevitable in light microscopy, but has been kept to a minimum in this image.
Gyrodactylus is ectoparasitic flatworms infections in fish.
mosquito larva egg under light microscopy
newly hatched freshwater fish under a light microscope, isolated on white
Captured by a scientific microscope and Canon 5D Mark IV
Group of Killifish of south Asia, Indian Ricefish (Male, Oryzias dancena). Skeleton upper body and iridescent eyes, close up macro photography.
A Leopard Frog Tadpole isolated on a white background.
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Dorsal view of an endangered lange metalmark butterfly.jpg
Close view of young girl in water.jpg
Children are amazed by a closeup view of a young alligator.jpg
Close view of head with antlers of young bull moose alces alces.jpg
FMIB_43267_Moose.jpeg
Chair-in-front-of-window.jpg
Poraquê_"Electrophorus_electricus".jpg
Desert tortoise turtle close up front view gopherus agassizii.jpg
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Melissodes_near_bimaculatus,_f,_virginia,_pulaski_county,_back_2016-12-16-13.31.jpg
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Close up view of a brown trout fish.jpg
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Andrena-miserabilis,-male,-pronotal-collar,-dorsal-view_2012-06-19-15.40.56-ZS-PMax.jpg
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A close view of two santa ana speckled dace fishes rhinichthys osculus.jpg
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the-young-ipad-africa-group-play-713333.jpg
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Eriphia verrucosa male 2009 G1.jpg
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