Linda Pitkin / Chinese lettuce coral (Mycedium elephantotus) Rinca, Komodo National Park, Indonesia.
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Linda Pitkin / Chinese lettuce coral (Mycedium elephantotus) Rinca, Komodo National Park, Indonesia.
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Jan Hamrsky / Large red damselfly nymph (Pyrrhosoma nymphula) with a sludge worm prey, Europe, October. Controlled conditions.
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Jan Hamrsky / Sludge worm (Tubifex tubifex) hiding in the sediments, Europe, May, controlled conditions
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Kim Taylor / Sludge worms (Tubifex sp) congregating at the bottom of a pond in mid-winter, Surrey, England
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Jane Burton / Young European eels / elvers {Anguilla anguilla} on riverbed after feeding on Tubifex sp worms, note silvery swim bladder and belly distended with red worms, UK
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Jane Burton / Young European eels / elvers {Anguilla anguilla} on riverbed feeding on {Tubifex sp} worms
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Jane Burton / Discus fish {Symphysodon discus} about to eat a {Tubifex sp} worm, captive, from tropical rainforest rivers in Brazil
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Willem Kolvoort / Sludge worms (Tubifex rivilorum) These worms live in the sludge of nutrient rich waters and factory effluents. Aquarium, Holland
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Willem Kolvoort / Sludge worms (Tubifex rivilorum) These worms live in the sludge of nutrient rich waters and factory effluents. Aquarium, Holland