. Goldfish varieties and tropical aquarium fishes; a complete guide to aquaria and related subjects. Aquariums; Goldfish. 16 AQUARIUM MANAGEMENT ance. In their special occupation as scavengers they employ a method which is both effectual and interesting. The dirt and top sand are taken in the mouth and rapidly shot out through the gills. Any par-. Fir;. 8. The \Vh.\therfish (Cohitis fussilis) tide of food considered edible is automatically separated from the bulk of the dirt and swallowed. Another scavenger fish is the Saccoljranchus fossilis. This fish has a head like a catlish and an elongat
. Goldfish varieties and tropical aquarium fishes; a complete guide to aquaria and related subjects. Aquariums; Goldfish. 16 AQUARIUM MANAGEMENT ance. In their special occupation as scavengers they employ a method which is both effectual and interesting. The dirt and top sand are taken in the mouth and rapidly shot out through the gills. Any par-. Fir;. 8. The \Vh.\therfish (Cohitis fussilis) tide of food considered edible is automatically separated from the bulk of the dirt and swallowed. Another scavenger fish is the Saccoljranchus fossilis. This fish has a head like a catlish and an elongated liody like an eel. Both of these scavengers arc harmless to other fish, but should not be used when over five inches long, as they stir up the water too much. Goldfish keep the sand loose and in good condition by picking it up in their mouths, but most other aquarium fishes do not touch it, which allows it to cake and become permanently dirty. The Weather- fish is most excellent to introduce with such fishes, even a single small one keeping the s;ind in a large aquarium loose on the top. Breeding Snails. rerh:ii)s here would be a good place to state that no kmd of snails can be kept in the company of carnivorous fishes, such fur instance as Sunfish (except Chaetodons) and most of the tropicals—Paradise Fish, Chanchitos and the like. The breeding of snails is extremely simple, yet there are certain conditions that are necessary to success. Among the ordinary and really useful aquarium snails there are only two kinds whose breeding requires any attention. These are the African and the Ramshorn, especially the coral variety. Both these snails deposit eggs on plants or glass in small, gelatinous masses. The young of the Japanese and I'ond Snails are alile to take care of themselves among the gentler fishes. The most important point is that the young hatch and spend the first several weeks of their lives where there are no large fishes. Naturall)- this will be done either by re
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