Give it time, goldfish grow very slowly. It may take up to 3 years for a goldfish to reach adult size. Your fantails probably have grown, it's just been so subtle that you haven't noticed. Another way you could get them to grow quicker is to, instead of feeding them once or twice a day, feed them three times a day. Small goldfish's abdomens can't hold as much food at a single time as say a larger goldfish, so feeding them plenty of small meals throughout the day, will ensure they are getting plenty of nutrition.
Goldfish usually react positively to having a light source, however it is unhealthy to leave your fish tank illuminated constantly and the light also encourages algae to grow rapidly. Eight to twelve hours a day is sufficient for a happy goldfish.
Yes, but only for a very short time, for goldfish are known to grow rapidly.
Because of the angular momentum when it is formed causes it to spin so rapidly.
Leaving a dead goldfish in your tank will boost ammonia levels.. You dont want ammonia in your tank. It rapidly kills fish
No It Is A Natural Action Of A Gold Fish Though If He Is Opening and closing Rapidly It May Be That He Is Worried
As i pullulated plants in my garden, the number increased rapidly and exceeded the amount i expected!
If a goldfish's skin is burned, irritated, or damaged somehow their bodies will produce a chemical called Leukine. Leukine stimulates cells so that the damage is repaired faster. The thing is Leukine especially stimulates melanophores (black pigmentation cells) and they begin to reproduce rapidly in that area. This is why the goldfish is turning black.
Provided you do your job and equalise the water parameters properly there should be no problems and the fish should settle in quite rapidly. I would expect a new goldfish to settle down and eat in the morning after an overnight settling in period.
The most rapidly increasing population is India the population is expected to overtake China by 2030. The most rapidly decreasing population is Latvia it's growth rate is -18.
For the most adapted organisms that are best suited to their environment to survive and reproduce more rapidly and eventually dominate.