IndiaHawker
Fish Fanatic
I have four Zebra Danios - two appear to be longfin and the other two standard. I'd noticed for a bit that sometimes the two standard would chase the two (or possibly just one of) longfin. Not constantly, but for short periods. I suspect the two standard danios to be male, and I was previously thinking both longfin danios were female, although now I'm unsure if one is female and one male (pictures below).
About a week or two ago I noticed the two standard ones had really fired up yellow, thought something was wrong but looked up online and read that it's likely a positive thing and means they're happy and mating. There was a period around then in particular when I noticed more chasing than usual.
The chasing seems to have cooled off for now, but the zebra danio that I think is female looks like her stomach is a bit larger than usual - wondering if she could be carrying eggs? Read that the eggs aren't fertilized till they're released; is this correct?
Also on a related note, the longfin that I'm unsure about male/female has a three-forked tail - could this be from an old injury (got the tank secondhand with the fish included), or just the way it's grown? This one was swimming mostly at the top of the tank yesterday but appeared comfortable and not gasping for breath. Wondering if it's more likely a submissive male staying away from the others, or a female? I took some close-ups last night before turning off the light, and when I looked today it appears that the middle fork has possibly been nipped off or something's happened to it? However the fish if anything tonight is staying at the top of the tank less and doesn't appear stressed or being chased (although I'm not very knowledgeable yet so I may not be able to tell if the fish appears stressed) Here are some pictures that I took last night (before the possible fin-nipping):
These are the two that I think are male:
These four photos are of the one I believe to be female, and possibly carrying eggs:
And these three photos are of the longfin zebra danio that I previously believed to be female but now am unsure about - the first of these photos shows him/her next to a standard zebra danio that I think is male:
Please and thanks for any help!
About a week or two ago I noticed the two standard ones had really fired up yellow, thought something was wrong but looked up online and read that it's likely a positive thing and means they're happy and mating. There was a period around then in particular when I noticed more chasing than usual.
The chasing seems to have cooled off for now, but the zebra danio that I think is female looks like her stomach is a bit larger than usual - wondering if she could be carrying eggs? Read that the eggs aren't fertilized till they're released; is this correct?
Also on a related note, the longfin that I'm unsure about male/female has a three-forked tail - could this be from an old injury (got the tank secondhand with the fish included), or just the way it's grown? This one was swimming mostly at the top of the tank yesterday but appeared comfortable and not gasping for breath. Wondering if it's more likely a submissive male staying away from the others, or a female? I took some close-ups last night before turning off the light, and when I looked today it appears that the middle fork has possibly been nipped off or something's happened to it? However the fish if anything tonight is staying at the top of the tank less and doesn't appear stressed or being chased (although I'm not very knowledgeable yet so I may not be able to tell if the fish appears stressed) Here are some pictures that I took last night (before the possible fin-nipping):
These are the two that I think are male:
These four photos are of the one I believe to be female, and possibly carrying eggs:
And these three photos are of the longfin zebra danio that I previously believed to be female but now am unsure about - the first of these photos shows him/her next to a standard zebra danio that I think is male:
Please and thanks for any help!