Feeder goldfish
Feeder goldfish is popular among keepers of predatory
fishes for several reasons. You should however keep in
mind that a diet that consists solely of feeder goldfish can F
cause some fish species to suffer from malnutrition. Some species
also have a tendency to die from “gut blockage” when fed feeder
goldfish. The gut blockage is caused by a feeder goldfish cranium
that becomes stuck inside the predatory fish and blocks the
passage between the stomach and the intestine. It seems as though
Lionfish is especially prone to this problem.
One of the reasons why goldfish is popular as feeder fish is the
fact that goldfish can produce very large spawns. Comet goldfish is
by far the most common type of feeder goldfish and a mediumsized
female Comet goldfish will produce up to 1,000 eggs during
each spawn. Many aquarists purchase feeder goldfish from pet
stores, but you can actually breed your own feeder goldfish at
home since Comet goldfish is quite easy to coax into spawning
mode.
A problem with feeder goldfish is that they can introduce a wide
range of problem causing bacteria, virus and parasites to your aquarium. If you purchase feeder goldfish instead of raising your
own, you should therefore ideally quarantine and treat them
before you add them to your aquarium. Feeder goldfish are often
kept in extremely crowded aquariums or ponds, and this places
large amount of stress on the fish. It can also be hard to keep the
water quality up during such conditions. The stress and poor
water condition means that it will be easier for bacteria, virus and
parasites to infect the feeder goldfish. Most predators are quite
resilient towards sick feeder goldfish, since the germs will be killed
in the stomach of the predator. Problems can however develop if
your predatory fish does not consume the feeder goldfish as soon
as it is placed in the aquarium. The infection will get a chance to
grab hold of the aquarium and the predators can eventually
become infected.
As mentioned above, you should ideally quarantine the feeder
goldfish. Put the fish in water that is at least two days old and add
a water conditioner. You can also perform some basic prophy laxis
by adding standard Ich remedy (half of the normal strength is
enough) during three days, and one teaspoon of salt for eachgallon of water. Quarantining feeder goldfish and performing
prophylaxis will ofcourse cost you some time and money, but it
will on the other hand significantly low er the risk of introducing
harmful organisms to your aquarium.
If you want to breed your own feeder goldfish, you should ideally
have a garden pond to it in, but breeding Comet goldfish in
aquariums are not impossible. Goldfish kept in ponds will often
spawn during spring, since the increased water temperature gets
them into spawning mood. This also means that if you bring your
pond goldfish indoors, they will often spawn since the temperature
is higher indoors.
As mentioned above, a mid-sized female Comet goldfish can
release up to 1,000 eggs. When the fry hatch, you can start
feeding them small brine shrimp, crushed flake food, or goldfish
pellets that have been grounded into a fine powder. You can also
purchase special fry food suitable for egg-laying fish species.
Getting the fry to eat is usually not hard at all.
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