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You can only tell dureing there mateing season I'm not sure when that is but I know that dureing that time the males will have little pimple looking things on there gills girls wont
Only by observation. The male goldfish develops white spots on his gillplates during the breeding season. When breeding the male drives the female who scatters her sticky ova on to plants and other...
Goldfih are fairly easy to care for so you'll just need to know the basics.
e.g. What they eat/ what not to feed and how much to feed them.
The correct size of tank to put it in. You'll need a...
They can only be sexed during breeding season when the males develop white spots on their gill plates and pectoral fins. The females only get a bit chubbier.
Firstly, sexing young and juvenile goldfish is virtually impossible, you have to wait until the fish reach breeding age (usually one year old).
Secondly, sexing adult goldfish out of the breeding...
You simply look at it and compare it to other fish that you have seen. Bloat is usually accompanied by the fish being unstable in the water. If the fishes scales are sticking out like a rasp/file the...