do fish breath under water?
Fish take the oxygen that they need from the water in which they live,
the pink gills, which lie behind their heads and move in and out regularly,
are the equivalent of our lungs, drawing oxygen from the water into
the fishes bloodstream.
is important that the water you keep your fish in is kept clean and
fresh, otherwise the fish could get into trouble due to lack of oxygen.
The water should be changed regularly and the water can be kept topped
up with oxygen by bubbling air through it using an air pump
long do goldfish live?
have an average life span of between 5-10 years. The oldest known goldfish
lived to 41 years of age
big do goldfish grow?
average goldfish is fairly small but they can grow up to a foot in length
often should I feed my fish?
is one of the most common and harmful errors in caring for fish. The
food that is not eaten turns into toxins in the tank
your fish small amounts once or twice a day, if they eat the food in
2-3 minutes and are looking for more, add another small pinch
are the signs of fin rot and what causes it?
one or more fin becomes frayed and sections of it erode off and disappear.
There are several causes including:
water quality - ensure the following levels:
- Oxygen >5.5 mg/l
- Ammonia < 0.01 mg/l
- Nitrate < 40mg/l
- Nitrite <0.125 mg/l
fish are pH sensitive
treatments can be used to treat the condition.
causes spots on fish?
of the common signs of disease in fish is the appearance of spots on the
surface of the skin. They come in different colours that can be helpful
in identifying the cause:
Small black or brown spots up to 2mm in size on the body or fins caused
by a worm. It affects coldwater fish including Carp, Goldfish and Tench
Cryptocaryon (also called Salt Water Ich)
This is caused by a marine parasite and causes grey-white nodules about
2mm in size, it irritates so the fish rub themselves against objects
Fish pox (also called carp pox or skin papilloma)
Caused by a virus, it forms small white spots that are opalescent. These
merge, causing large patches and later they turn reddish-grey, it mainly
Ich (white spot)
This is caused by a parasite, it appears as small pinhead spots on the
fins and body. It affects all freshwater aquarium fish and the fish rub
themselves against objects
Caused by a fungal infection, small white nodules appear on the skin,
often fish have a swollen abdomen as well
Reddening of the skin all over the body is associated with bacterial septicaemia,
the fish can become very ill and die very quickly
Lymphocystis (also called cauliflower or raspberry disease)
Small white nodules occur on the skin and fins and grow to 2mm size tumours.
This is caused from a virus and often the fish will die from it
Sporozoan infections cause cysts (containing the parasite) they vary in
size from pinhead to pea-size spots. A wide variety of fish are affected
Similar to black spot it causes black or yellow spots in tropical fish.
of the above conditions can be treated relatively easily, others cannot.
Some of the diseases can survive in the aquarium and re-infect fish later.
If you have a fish showing these signs consult your vet as soon as possible.