Hello Suzie, welcome to FWM.
I just replied to your question on setting up and transferring your fish to your newly acquired tank. I tend to be bass-ackwards at times...
. Please consider this info in addition
to the info in that thread.
Goldfish are messy, messy fish. They are messy eaters and produce a lot of waste. And they get fairly large. Three of your four little babies are going to get between 6" and 12" (12-30 cm) or so (fancy varieties such as the oranda and black moor) often do not reach the sizes of less domesticated varieties, such as the common goldfish). Eventually you will want to look at a tank with a minimum of 55 gallons for all them, and rather than the minimum flow rate for flirtation I mentioned in my other post, I would consider 7 or 8 times the volume of the tank in gph.
All goldfish varieties belong to the species Carassius auratus
, so I'm wondering what you have that yer callin' "a little carassius". Worst case scenario is that it's actually a Crucian carp Carassius carassius
. These fish are usually sold as pond fish. Though the care is pretty much the same as goldfish and there should be no issues initially, the Crucian carp can reach 2 feet (60 cm). Eventually it will need much larger quarters. Let me stress that I don't know that this IS a Crucian carp. It is just a bit odd to see a goldfish referred to as "a little carassius" and on that note I thought I'd give you a heads up on what the future may hold...
So many fish, so few tanks.
"In the fields of observation chance favors only the prepared mind." - Louis Pasteur