Post
by Diana » Wed Aug 12, 2009 9:10 pm
Measure the tank.
L x W x H (all measured in feet) x 7.5 = American Gallons.
L x W x H (all measured in inches) x 231 = American Gallons.
L x W x H (all measured in centimeters) / 1000 = liters.
Goldfish need at least 20 gallons for the first one, and 10 gallons more for each additional goldfish until they reach about 5-6", then they need an even larger tank. Fancy types of goldfish get taller and fatter rather than long, but they need plenty of water also. They are not such good swimmers, but they produce as much waste as the original or wild shaped fish.
I would aim for something like a 45 gallon tank for up to 5 fancy golds to 4" long, or 3 fancy goldfish to 6" long. If you want to keep Dojo Loaches I would try 3 Golds and 5 Dojo Loaches in a 4' long, 45 gallon tank. When the Golds get too big (water quality is hard to maintain without frequent water changes) you might separate the fish into 2 tanks this size, or larger.
Ditto the other comments. The small fish with a sucker sort of mouth that is hiding looks more like a Chinese Algae Eater. Dojo Loaches do not have sucker mouths. These are not good to keep with Goldfish. They have been caught in the act of sucking the slime coat off goldfish and other tank mates.
If the tiles on the walls are 4" x 4" then this tank looks like 8" x 12" x 10" high. Smaller than even a 5 gallon, and not good for Goldfish at all.
Goldfish grow REALLY fast, and create more ammonia than similar fish. They need a large tank, and lots of filtration.
38 tanks, 2 ponds over 4000 liters of water to keep clean and fresh.
Happy fish keeping!