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After mating, the female burrows into the flesh of a fish and transforms into an unsegmented, wormlike form, usually with a portion hanging from the fish's body. [1] Eggs are released from the posterior "tails" (egg sacs) into the water, where they hatch within 24 to 36 hours. [ 2 ]
The term white worm is often used for all of the species in general, but specifically it is E. albidus which is named the white worm. This species is used as fish food by aquarium enthusiasts. E. buchholzi is known as the Grindal worm. It was named for the Swedish fish breeder that first raised the worm to feed her fish. Some species are ...
When their population becomes high, the worms migrate toward the surface of the water for access to higher concentrations of oxygen. [citation needed] Although detritus worms may not cause harm to aquarium fish, their appearance is an indication of poor water quality mainly due to overfeeding and lack of good water sanitation. [5]
[1] [2] The female worm, with her now-fertilized eggs, then finds a cod, or a cod-like fish, such as a haddock or whiting. There, the worm clings to the gills while it metamorphoses into a plump, sinusoidal, worm-like body, with a coiled mass of egg strings at the rear.
Gongylonema pulchrum was first named and presented with its own species by Molin in 1857. The first reported case was in 1850 by Dr. Joseph Leidy, when he identified a worm "obtained from the mouth of a child" from the Philadelphia Academy (however, an earlier case may have been treated in patient Elizabeth Livingstone in the seventeenth century [2]).
The free-living nematode Panagrellus redivivus (sour paste nematode, [2] or beer mat nematode from its occurrence in constantly moist felt beer mats), [1] is known to many aquarium enthusiasts and fish keepers as the microworm. It is a tiny roundworm used as the first food for larger kinds of newly-hatched fish, such as larval common carp. [3]
Enchytraeus buchholzi/Grindal worms are cultured by aquarists as a fish food, often on a bed of ground coconut shells, or coir, with oatmeal. They are used for conditioning tropical fish before spawning, or for young fast-growing fish. In laboratory testing, Enchytraeus buchholzi were kept in an incubator at 15 ± 2 °C. Water loss and food ...
The peculiar genus Mesenchytraeus is known as "ice worms", as they spend the majority of their lives within glaciers, only rising to the surface at certain points in the summer. [ 2 ] [ 3 ] Enchytraeidae also includes the Grindal worm ( Enchytraeus buchholzi ), which is commercially bred as aquarium fish food.
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