. Fresh-water aquaria: their construction, arrangement, and management, with full information as to the best water-plants and live stock to be kept, how and where to obtain them, and how to keep them in health. Aquariums. 174 PRESH-WATEE AQTJAEIA. is sometimes an incli in diameter; the periphery is round. This snail has a ctirious habit of fixing itself by its side to perpendicular surfaces, such as the glass of the aquarium. Planorhis carinatus is also a very useful snail in a tank, and very popular with aquarium-keepers. The periphery of the shell, instead of being round as in the last speci
. Fresh-water aquaria: their construction, arrangement, and management, with full information as to the best water-plants and live stock to be kept, how and where to obtain them, and how to keep them in health. Aquariums. 174 PRESH-WATEE AQTJAEIA. is sometimes an incli in diameter; the periphery is round. This snail has a ctirious habit of fixing itself by its side to perpendicular surfaces, such as the glass of the aquarium. Planorhis carinatus is also a very useful snail in a tank, and very popular with aquarium-keepers. The periphery of the shell, instead of being round as in the last species, is dis- tinctly keeled near the centre. Like P. cornms, it feeds upon confervas in preference to growing plants. It is not a very active animal. P. carinatus is unfortunately by no means. Fig. 117. Planorbis marginatus. •common, except perhaps in the ponds, ditches, and slow- running streams of the Eastern Counties. It is taken in other parts of England, but not in any numbers; nevertheless, it can generally be bought of aquarium dealers. This species incloses its eggs (six to twelve in number) in capsules shaped like those of P. corneus, and affixes them to stones, leaves, &o., and in addition to these, while in confinement, to the sides of the aquarium. The fry are hatched, according to the temperature of the water, in about fourteen days. The body of the animal is a reddish dark brown. The tentacles are slender and yellowish, with a pinkish tinge; they are also. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bateman, Gregory Climenson. London, L. U. Gill
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectaquariu, bookyear1890
