. Goldfish breeds and other aquarium fishes, their care and propagation; a guide to freshwater and marine aquaria, their fauna, flora and management. Aquariums; Goldfish. FOOD AND FEEDING. the three anterior pairs of limbs as foot-claws and the five pairs of posterior limbs as walking legs. The eyes are stalked and the gills thoracic. Sub-Order Amphipoda. This sub-order includes the Water-fleas and the marine Sand-hoppers, of which one genus is present in both running and standing fresh water. Gammarus. This freshwater Crustacean, known as the Water- fleaand FairyShrimp,Ga;»Wi3r«j'^a/&
. Goldfish breeds and other aquarium fishes, their care and propagation; a guide to freshwater and marine aquaria, their fauna, flora and management. Aquariums; Goldfish. FOOD AND FEEDING. the three anterior pairs of limbs as foot-claws and the five pairs of posterior limbs as walking legs. The eyes are stalked and the gills thoracic. Sub-Order Amphipoda. This sub-order includes the Water-fleas and the marine Sand-hoppers, of which one genus is present in both running and standing fresh water. Gammarus. This freshwater Crustacean, known as the Water- fleaand FairyShrimp,Ga;»Wi3r«j'^a/<?;c,hasaflattenedform,theanteriorportion consisting of the head and thorax covered with a carapace, and the posterior portion with six segments and a terminal flap ending in a short bristle. The anterior three pairs of legs serve for swimming and the posterior legs for swim- ming and the hopping motion by which it moves more rapidly through the water. The color is a translucent dusky grey. It is found in muddy streams among half-rotten brush wood and other litter, usually hidden under stones or aquatic plants, generally feeding at dusk or at night, when it either swims leisurely through the water or hops by rapid strokes of the posterior legs. Its food is decaying fig. 71. Gammarus puiex. vegetation, small animals and spawn; and will serve reatyenarge . as an eff^ective scavenger in tanks for larger fishes and amphibia but should not be introduced with young fishes. Sub-Order Isopoda. This sub-order includes the Water-Asel, Wood Louse and a number of marine forms. AsELLOPUs.' This freshwater Crustacean is known astheWater- Kse\,Asellopus ienax, and has a compressed or flattened form and a segmental body covered with an olivate armor marked with lighter spots. It reaches a length of i to centimeters, and inhabits still and slow-flowing water containing considerable vegetation. Its movements are slow and it is usually secreted in the mud or on the under side of th
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectaquariu, bookyear1908
