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Gambusia is a large genus of fish in family Poeciliidae.
A teenaged male fisherman enjoying a beautiful day out fishing for trout in Nova Scotia
Epidermis. Electron microscope micrograph showing a keratinocyte of spinous layer. The epithelial cell has a polygonal shape, central nucleus with nucleolus, cytoplasm full of keratin filament bundles, and numerous dark desmosomes crossing the intercellular spaces.
Blastomycosis is a fungal infection caused by inhaling Blastomyces dermatitidis spores. If it involves only the lungs, it is called pulmonary blastomycosis. Only about half of people with the disease have symptoms, which can include fever, cough, night sweats, muscle pains, weight loss, chest pain, and feeling tired.
Microscopic close view of high vaginal swab Gram stain smear, 100x. diagnosis of Bacterial vaginosis (BV).
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.
Liver Fluke Section under light microscope with white background
Japanese killifish on white background. Clipped image
Young blond man tasting water by a river in nature
centropyxis aculeata (amoeboid organism) under the microscope - optical microscope x400 magnification
Carp fishing. lucky fisherman holding a big common carp
Trematode parasite under a microscope
A musky (muskellunge), Esox masquinongy, in bar phased coloration is photographed underwater at night in a vegetation bed in a northern Wisconsin lake.
Catch and Release Trout Fly Fishing - Releasing trout caught with fly fishing rod and reel, being released back into alpine lake.
Planarian parasite (flatworm) under microscope view.
The Pajama (Pyjama) cardinalfish, Sphaeramia nematoptera, is a species of fish belonging to the Apogonidae family. Distributed throughout much of the West Pacific, from Java to Fiji, and from the Ryukyu Islands south to the Great Barrier Reef. In Pajama cardinalfish, males incubate the eggs in their mouth until they hatch.
Arowana young fish beautiful fish tail, swimming lonely  in the pond
Asian mid adult scientist male in casual cloth collecting water sample into a test tube for laboratory water analysis to analyze heavy metals contamination in water at marsh, ิbotanic garden. Environmental and conservation research
amazing inhabitants of the microworld under a microscope
a fisherman holding up a redfish he just caught
Freshwater aquatic zooplankton and algae under microscope view
Photomicrograph of algae, Cosmarium turpinii, a desmid. Live specimen. Wet mount, 40X objective, transmitted brightfield illumination.
Photomicrograph of Stomach Adenocarcinoma. Gastric Adenocarcinoma.
Pheochromocytoma, Site: Adrenal gland
Catla fish on the white background
A man relaxing in the mountain river.
Mature fisherman showing his catch standing by a river outdoors
white and purple flowers in bloom
The common perch (Perca fluviatilis) is in female hand on blurred background. The little fish is in a fisherwomen's palm in outdoors.
White flowering branch
Free Images: "bestof:Opah 6.jpg watermark en Lampris guttatus NMFS biologist Nick Wegner holding a recently captured Opah fish 2015-05-15 https //swfsc noaa gov/ImageGallery/Default"
Judges take a close look at the entries for the 2011 Federal Junior Duck Stamp Contest.jpg
Biologist holding a gray bat at a gray bat survey site.jpg
Cobia (7152180729).jpg
Eastern_cicada_killer_wasp_(Sphecius_speciosus)_with_Cicada.jpg
Girl scouts in frog survey.jpg
Aleutian church.jpg
SLNSW 42767 A man holding open the jaws of a captured shark.jpg
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Bijar in First World War (1914-1918) 12.JPG
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Kapok (Ceiba pentandra) tree, used for making artisanal fishing canoes.jpg
John Long with Gogo fish in the field 2005.jpg
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