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| Blue Dempsey

General info about Electric Blue Jack Dempsey

These fish are a natural variant of the Jack Dempsey species. They are bright blue with black markings and are usually 8 inches long. They. To keep these fish in captivity, water pH should be between 7.0 and 8.0 and water temperature should range from 72°F to 86°F, however, some say that keeping them below 78°F helps reduce aggression. The tank should have a sandy substrate, floating plants, rocks and driftwood. They can be kept in community tanks with species that are too large to fit in their mouths. They may get aggressive towards their own so they should be kept singly, however, if they are to be kept in a group the group should at least be large and not just a pair. A 45 gallon tank is enough for a individual, for a group a larger tank is needed.

Electric Blue Jack Dempsey Diet & Nutrition

This species is omnivorous. In the wild they feed mainly on invertebrates, in captivity they can be fed with flakes, pellets and live food like prawns and Daphnia.

Breeding & Spawning Electric Blue Jack Dempsey

Since the Electric Blue Jack Dempsey variety is a mutation of the species  they are extremely hard to breed. To breed them, a regular Jack Dempsey and a Jack Dempsey with the blue gene must mate, only 25% of the fry will be Electric Blue Jack Dempsey. These are very slow growing and are often eaten by the other fry.

Electric Blue Jack Dempsey Origin

This species is endemic to  Central America.

Acclimating Electric Blue Jack Dempsey

The water in which these fish are packaged is different from the water in the tank, since these fish are extremely sensitive to water conditions the acclimation process is very important. This process should never be rushed. Aquarium lights should be off for at least the first 4 hours of the fish in the new tank and it should not be fed in the first 24h. There are two acclimation methods: Floating Method and the Drip Method.

Floating method -  the aquarium lights should be off and lights in the room should be dim, the bag in which the fish is should be placed in the surface of the water to float for about 15 minutes, this allows the water in the bag to adjust to the water in the tank. The bag should then be cut under the knot and the top edge of the bag should be rolled down one inch, then ¼ cup of the aquarium water should be added to the bag, this step should be repeated every 4 minutes until the bag is full, then half the water of the bag should be discarded and the bag should be put to float again and ¼ cup of the aquarium water should be added to the bag every 4 minutes until the bag is full. Afterwards, the Discus can be moved into the aquarium.

Drip method – the aquarium lights should be off and lights in the room should be dim, the bag in which the fish is should be placed in the surface of the water to float for about 15 minutes, this allows the water in the bag to adjust to the water in the tank. The bag contents should be poured into a 1 gallon bucket that has never been cleaned with any chemicals, the fish should be enterally submerged. A siphon, using airline tubing, should be set up and a drip line should run from the main aquarium to the bucket. Several loose knots should be tied in the airline tubing to regulate flow. Sucking the end of the airline tube that goes to the bucket will begin a siphon, the flow should be regulated to 2 to 4 drips per second. Once the water in the buckets doubles, half should be discarded and the process should be repeated until it doubles again. Afterwards, the fish can be moved to the aquarium.

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Original Detail

Name Species Family Scientific Name More Detail Added by
Electric Blue Jack Dempsey New World Cichlids Cichlidae Nandopsis octofasciatum

These fish are a natural variant of the Jack Dempsey species. They are bright blue with black markings and are usually 8 inches long. They. To keep these fish in captivity, water pH should be between 7.0 and 8.0 and water temperature should range from 72°F to 86°F, however, some say that keeping them below 78°F helps reduce aggression. The tank should have a sandy substrate, floating plants, rocks and driftwood. They can be kept in community tanks with species that are too large to fit in their mouths. They may get aggressive towards their own so they should be kept singly, however, if they are to be kept in a group the group should at least be large and not just a pair. A 45 gallon tank is enough for a individual, for a group a larger tank is needed.

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