TROPICAL AQUARIUM FISHES 191 
Fic. 141. Water Popry (Reduced one-half) 
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Fic. 142. Duckweep (Life size) 
Fic. 144. CrystaLtwort (Life size) 
WATER POPPY 
Limnocharis humboldti, owing to its generally satisfactory qualities, 
has become one of the most popular plants in the indoor and outdoor 
tank, as well as the large aquarium. It grows very rapidly and continu- 
ously sends out new plants which have groups of buds. Usually a new 
bud blooms every day. The 3-petaled yellow flower with a brown eye or 
centre only lasts a few hours but is a most pleasing and artistic feature. 
The parent plant should be potted, preferably not very deeply in the 
water. The new plants run at the surface, occasionally sending down 
strong stems to obtain a fresh rooting. 
