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Betta Fish Center >> Types of Bettas >> Betta Smaragdina

Betta Smaragdina

11:30 AM - January 12, 2013 by Adam Short

Date Classified: 1972

Native Location: Thailand

Environment: Grassy marshes, rice paddies, pools and ditches

Water pH: 6.5

In Aquaria:

Physical Appearance:

•    Dark body
•    Metallic blue, black, blue-black or green on the gill cover


•    Males’ fins are longer and have richer colors
•    Pelvic fins have red spots
•    Pelvic fins may be edged in white

Size: 2.5 inches in length

Feeding in Captivity: Live such as brine shrimp or frozen; commercially prepared flakes and dried

Water and Hardness: Calcium-magnesium hardness of 8-10

Water Temperature: 75-82 degrees Fahrenheit

Water pH: Neutral at 7.0 or slightly lower and more acidic

Breeding: When bred for fighting, their fins are shorter. When bred for hobbyists and aquariums, their finnage is longer and more elegant. Easily bred in a 10-gallon fish tank that is 50% tap water and 50% RO water. Tank should be densely vegetated.

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