Feeder Comet Half Box (300-350 Count)
Type: carassius auratus
Care Level: Easy
Water Conditions: 6.5-7.5 (Soft to Hard)
Temperature: Optimal Range 10-24 °C (50-75 °F) Upper Range 24-30 °C (75-86 °F)
Maximum Size: 13 inches (33 cm)
For anyone who hasn’t seen a well cared for goldfish, it may come as a surprise that they can grow to enormous sizes. Anyone who has ever has the chance to see my goldfish tank always assumes they are some type of koi, and are shocked when I tell them that they’re regular goldfish. (One of which was a rescue from a carnival.)
Because of their aquarium busting size, they should only be kept in the largest tanks, although they can be kept in smaller tanks while they’re still very young. The minimum size tank for a small group of comet goldfish should be a 55 gallon tank, though a 75 gallon tank is preferable. This will give them a chance to grow to a full and healthy size – something that can’t happen in smaller tanks.
When it comes to choosing a filter for goldfish, the mantra “bigger is better” applies here. The best filter for a goldfish tank is a canister filter, but you can achieve the same results (and spend far less money) by using a high quality hang-on-back filter in conjunction with a sponge filter.
It’s important to remember that goldfish are cold-water fish, and will do best if kept in a cool room. They should never be kept in a heated tank or in an overly hot room. If their tanks temperature gets too high, it may result in permanent nerve damage to the goldfish.
Since comet goldfish require coldwater, they should never be kept with tropical fish, as the tank will either be too warm for the goldfish, or too cold for the tropical fish. Some good tank mates are gold barbs, dojo loaches and some people have had success with zebra danios. But the danios will nip at the goldfish if they aren’t kept in a school of at least six, and some are nippers regardless, so add danios with caution.
Getting comet goldfish to accept food is not difficult – they will eat nearly anything that will fit in their mouth. With that being said, feeding them properly is what can be more difficult.
In the wild goldfish are omnivores, and they feed on plant matter, algae, insects and small crustaceans. But their diet is primarily composed of plant matter and algae, and it’s important to replicate this in the home aquarium. If their diet doesn’t contain enough fiber from plants and algae, they may develop a condition called bloat.
Breeding comet goldfish in the home aquarium is difficult and should generally only be done in outdoor ponds. If you do plan on breeding them in an aquarium, then a separate tank must be set up to separate the parents from the eggs.
Like most cold-water fish, comet goldfish require a trigger to start spawning. The easiest way to do this is to lower the temperature for a period of around one month, and to reduce the light period to less than 8 hours a day for the tank.
Adding some high quality foods to their diet can also help to condition the comet goldfish for breeding, and frozen or live foods should be fed daily in addition to the usual vegetables and herbivore flakes and pellets.
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