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Struma stone loach - Oxynoemacheilus bureschi species of ray-finned fish in the stone loach family Nemacheilidae, found in the Struma, Vardar and Nestos river basins Bulgaria, Greece, North Macedonia and Serbia.
Male common whitetail (Plathemis lydia) on rock. A North American dragonfly.
Java barb (Barbonymus gonionotus), also known as the silver barb.
An African species that extends into adjacent Eurasia. Once common only in the Mediterranean region, the robust and aggressive virtual all-red male is becoming an increasingly common sight further north.\nField characters: Tot 36-45mm, Ab 18-33mm, Hw 23-33mm. A bit larger and substantially bulkier than Sympetrum species. \n\nThis beautiful Dragonfly is nowadays a quite common  Species in the Netherlands.
exotic aquarium fish astranatous with close-up
Photomicrograph of mayfly nymph, Baetis species, with leaflike gills on back. Live specimen. Wet mount, 2.5X objective, transmitted brightfield illumination.
Picture featuring blue dragonfly.
Cherry Shrimp Close-up in aquarium
Turquoise (Adscita statices)
An image of a Migrant Hawker Dragonfly at rest on foliage in sunlight.
Planaria worm in pond water
Field characters: Tot 56-64mm, Ab 43-54mm, Hw 37-42mm. Distinctly smaller than most Aeshna species.\n\nThe commonest small hawker. Numerous in much of our area, and although it can be on the wing during most months in the Mediterranean, further north it is especially associated with late summer and autumn, when it may appear in massive migrations. It is usually identified by its size, relative dull colours and the diagnostic yellow \
Monotomidae, Coleoptera Fossil in Burmese amber of Cenomanian era, 100 million years ago, from the state of Myanmar, extreme macro shot
Closeup Group of Green Spotted Puffer Fish Isolated on White Background
Chrysoperla carnea Common Green Lacewing Insect. Digitally Enhanced Photograph.
Large walnut aphid (Panaphis juglandis) on the upper side of leaf of walnut (Juglans regia) nymphs and adults.
A Damselfly at rest
Closeup of an Egyptian Locust (Anacridium aegyptium) sitting on a stone, sunny day in springtime, Cres Croatia
Nereid (segmented worm) from San Fancisco Bay, California, USA. Photographed through a microscope. Wet mount (internal organs visible), 50X, transmitted light.
Close-up view of a Peacock bass (Cichla sp.)
tiny blue butterfly feeding on the flower, Green-Underside Blue, Glaucopsyche alexis
Haliotis kamtschatkana, northern abalone or pinto abalone, is a species of large sea snail, a marine gastropod mollusc in the family Haliotidae, the abalones. It has been listed as \
A halloween pendant dragonfly perched on a blade of grass in the wetlands
The pale blue males, showing off their white legs to each other, are a familiar sight along rivers and calm streams in large parts of Europe. \nField characteristics: Tot 35-37mm, Ab 27-31mm, Hw 19-23mm.\nDistribution: occurs in a great part of Europe, but are absent in northern England, Ireland and northern Scandinavia.\nHabitat: Characteristic of floodplains, dominant on oxbows, rivers and open stretches of streams. Also lakes and a wide range of man-made habitats.\nFlight Season: From the start of May to the end of September.\n\n\nThis Picture is made during a Vacation in Bulgaria in May 2018.
Corydoras fish on the bottom and in the aquarium.
A   Large metallic damselfly with fluttering, butterfly-like wings resting in foliage
Butterfly peacock bass (Cichla ocellaris).
A slender skimmer in its characteristic position on a stalk near a stream in Bali, Indonesia.
Free Images: "bestof:Crenicichia saxallis L Two members of the Cichlidae, of which there are about 156 known species between the borders of the.jpeg Crenicichia saxallis L Two"
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