. Goldfish varieties and tropical aquarium fishes; a complete guide to aquaria and related subjects. Fig. 138. Quillwort (Reduced one-half) varies from a few inches to several feet. The small submerged speciesare worth trying in the aquarium, as they are tenacious of life. Theleaves rise from the centre of a circle or rosette, producing a very prettyeffect. Quillwort should be placed in a good light. It is eaten by somesnails and fishes. TROPICAL AQUARIUM FISHES 189. Fig. 139. (Life size) 190 GOLDFISH VAEIETIES A:N^D HETERANTHERA Hcteranthcra zosteracfolia is a very light green
. Goldfish varieties and tropical aquarium fishes; a complete guide to aquaria and related subjects. Fig. 138. Quillwort (Reduced one-half) varies from a few inches to several feet. The small submerged speciesare worth trying in the aquarium, as they are tenacious of life. Theleaves rise from the centre of a circle or rosette, producing a very prettyeffect. Quillwort should be placed in a good light. It is eaten by somesnails and fishes. TROPICAL AQUARIUM FISHES 189. Fig. 139. (Life size) 190 GOLDFISH VAEIETIES A:N^D HETERANTHERA Hcteranthcra zosteracfolia is a very light green plant, slightly re-sembling Anacharis, but with longer, more widely separated leaves. It isa rapid grower, soon reaching the top, where it lays limp on the surfaceof the water. A good oxygenator, but has never become very popular onaccount of its rambling, untidy habits. Can occasionally be had of dealers. LACE PLANT This extraordinary plant, Onviranda fenestralis, is a native of Mada-gascar. Its dark-green skeleton leaves appear very fragile, but in realitythey are the toughest-leaved aquarium plant we know of. They are slow
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