![]() ![]() VIE tags were retained for 1 year and tagging did not interfere with long-term growth and survival. Horizontal tagging is recommended in early stages of fish growth (1–2 months post hatch). Growth rate of juvenile zebrafish was not affected by VIE tagging. The best tag location was the dorsal fin base, and the most visible tag color was pink. Lastly, survival of recombination activation gene 1 −/− ( rag1 −/−) zebrafish was evaluated after VIE tagging. Long-term retention (1 year) and multiple tagging sites (right and left of dorsal fin and pectoral fin base) were examined in adult zebrafish. Six tag locations (abdomen, anal fin base, caudal peduncle, dorsal fin base, pectoral fin base, isthmus) and 5 tag colors (yellow, red, pink, orange, blue) were evaluated for ease of VIE tag application and tag visibility in adult zebrafish. Two tag orientations (horizontal and vertical) at the dorsal fin base were tested for tag retention, tag fragmentation and whether VIE tags affected growth and survival of juvenile zebrafish (1–4 month post hatch). Powdered egg may also be added to the fry food to promote growth.The use of the visible implant elastomer (VIE) tagging system in zebrafish ( Danio rerio) was examined. Feed the young commercially prepared fry food, or finely crushed dry foods. Fry are very tiny, and can easily be lost when changing water, so take care when maintaining the grow-out tank. Remove breeders after spawning, as they will consume the young. 300 to 500 eggs will be scattered across the bottom and on the plants. Spawning requires temperatures of up to 78 degrees, and can be triggered by raising the water a couple of degrees near dawn, when spawning normally occurs. ![]() ![]() Course gravel works well, as the eggs will fall between the gravel pieces and will be protected from the adult fish, which will readily eat their own eggs. Furnish the tank with fine-leafed plants or a spawning grid on the bottom. The breeding tank should be set up with shallow water, approximately six inches deep. Mated pairs remain together for life, and rarely spawn with others, even if one mate dies. A unique quality of the Zebra Danio is that as they are quite loyal to their chosen mate. Zebra Danios are ideal for beginners, as they are prolific breeders. Although undemanding in diet, they particularly enjoy small live or frozen inverts, and fresh vegetable matter.=Breeding:= Zebra Danios are omnivorous, accepting almost any foods. They should be provided with plenty of lighting and an open swimming space, together with some vegetation.=Diet:= However, they will adapt to a wide range of water conditions. Technically they are considered cold-water fish, preferring water in the 64-75 degree range. Zebras are primarily surface dwelling fish that favor moving waters. The leopard variety is characterized by a copious sprinkling of black spots over the entire body. Both sexes have two pairs of barbels and the same stripes, but females are usually larger and more full-bodied than the males.Īlbino, veil tailed, and long finned Zebra Danio varieties are available, as well as a popular leopard variety. Their small size of the Zebra Danio, no more than two and half inches, and peaceful nature, make them well suited to a community aquarium. Blue-purple horizontal stripes run from gill to tail, setting off the slim compressed silver-gold body of this attractive fish. Social: Peaceful, suitable for community tanksĪmong the most hardy and active of aquarium fish, the Zebra Danio is easily recognized by its distinctive horizontal stripes. ![]()
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