![]() ![]() I have noticed quite a growth spurt in conjunction with their new method of searching for food. After this time, they search all levels of the tank for food. One interesting observation is that for the first two to three weeks, the fish only feed at the surface. The body is still clear, but the eye reflects a brilliant blue reminiscent of the neon tetra. At their current size, the fish are very pretty. They were raised mainly on Liquifry and smashed-up dry food with occasional live baby brine shrimp. Now, almost one month later, the leopard danio fry are all about 1/4″ long. ![]() I believe the pearl danio fry out-competed all but the toughest leopard danio fry. The fry survival rate was not very high, because these tanks already held pearl danio fry that were two days older. After hatching, the fry were separated among a 20 long and a 10-gallon tank. The parents were placed in the spawning tank 17 January 1999 in the evening and removed the following night. The temperature was 82 F, pH 6.8, and general hardness 60 ppm. The spawning tank was a mixture of 70% rainwater and 30% tap water. This is because even after the fry hatch, they lay at the bottom for four to five days, absorbing the yolk sac and remain protected by the marbles. With the marble substrate, it is possible to breed the fish in the same tank for up to a week. The marbles trap the eggs and keep the ever-hungry parents from consuming them. The spawning tank had a sponge filter, lots of Java Moss, and a substrate of dark marbles. The male and the two most gravid females were then moved to a 5-gallon tank for spawning. The fish were fed Tetra Bits, frozen brine shrimp and frozen bloodworms. The tank was at 78 F, pH 7.6, and had a general hardness of 140 ppm. I conditioned five fish, one male and four females, in a ten-gallon tank for two weeks. The fish school about the upper waters, which is nice because close to the light, their gold bodies are very reflective and make a nice display. The fish does not harm plants and gets along fine with just about any tankmate. The leopard danio is a pretty fish that grows to just over 2″ in length. It would certainly be a worthwhile research project for an aquarist to look through the scientific and aquarium literature and put this debate to rest. The debate over the validity of this species has been in the aquarium literature for years. Some experts wonder if the fish is a true species or just a form of the zebra danio, Danio rerio (Hamilton, 1822). The scientific status of the leopard danio has been in question for many years. The fish is an overall metallic gold with blue-grey spots along the flanks. The leopard danio is one of the most common danios found in pet stores. Share on Facebook Share on Twitter Share on WhatsApp Share on Reddit Share on Pocket Share on Email ![]()
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