SILVER TETRA: CTENOBRYCON SPILURUS
(Br. Guiana)
Color: Steel blue body covered with very fine bright silver scales. Body very thin. Large black spot at base of caudal. Tetras are all easily identified by the small adipose fin between dorsal and caudal. Male slightly smaller with invisible processes on anterior tip of anal which catch in fine net. Sex is determined in this way.
Breeding Habits: Egg layers—lay great quantities of adhesive eggs on fine plants. Plants or parents should be removed as soon as spawning is completed. Fry will make their appearance in a few days. Be sure there are no snails in tank with eggs.
Temperature: 70° to 90° F.
Maturity: 6 to 8 months.
Temperament: Very active. Not for community tank.
TETRA FROM RIO (above): HYPHESSOBRYCON FLAMMEUS
(Brazil)
TETRA FROM BUENOS AIRES: HEMIGRAMMUS CAUDOVITTATUS
(Argentina)
average size
Color: TETRA FROM RIO—body bright silver—3 black bars near head; fins brilliant red edged with black; black edge on anal of male wider than on female. During mating season red runs well into body. TETRA FROM BUENOS AIRES—body bright silver, fins blood red. Large diamond shaped spot at base of caudal. Sex determined same as Silver Tetra.