. The complete aquarium book; the care and breeding of goldfish and tropical fishes. Aquariums; Goldfish. 78 FISHFOOD conditions cypris multiplies with astounding rapidity. It has been claimed that they devour spawn and young fishes. This is undoubtedly an error, but they do greatly annoy snails and eventually cause their death by getting into some inner recesses of the animal. Blood Worms. In freshwater pools nearly everywhere can be found deep-red, jointed worms about half an inch long. They usually stay at Fig. 60. Bloodworm (Enlarged four times) the bottom, living chiefly on decomposing ve
. The complete aquarium book; the care and breeding of goldfish and tropical fishes. Aquariums; Goldfish. 78 FISHFOOD conditions cypris multiplies with astounding rapidity. It has been claimed that they devour spawn and young fishes. This is undoubtedly an error, but they do greatly annoy snails and eventually cause their death by getting into some inner recesses of the animal. Blood Worms. In freshwater pools nearly everywhere can be found deep-red, jointed worms about half an inch long. They usually stay at Fig. 60. Bloodworm (Enlarged four times) the bottom, living chiefly on decomposing vegetal matter. Often they will writhe their way awkwardly through the water in a series of figure eights. They are the larvae of midges and form an important article of diet for our native fishes. They are often found in large numbers in daphne pools and should always be taken when possible. If too large for the young fishes, they make choice morsels for the older ones. Tubifex Worms. These are small thread-like worms living in mud and sand. They form a tube or case below the surface, extending the upper ends of their bodies from this in search of small organic food, causing a circulation of water about themselves by a constant weaving. Fig. 61. Tubifex Worms (Magnified, and as they appear to the naked eye) motion. When alarmed they draw back into the case. They are exten- sively cultivated in Europe as a food for tropical fishes. A similar variety is often introduced into goldfish aquaria when feeding daphnia, where they become an unsightly nuisance, for goldfishes cannot catch them. To get rid of them it is necessary to boil or renew the sand or else keep other fishes in the aquarium for a long time. The worms have to be eaten off many times before the stock dies. Germicides strong enough to kill them will also destroy the plants, as they can withdraw into the sand. Along the edges of ditches they are often so numerous as to make a solid rusty- red color. If they are scraped u
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