40 Gallon Tank Goldfish chasing another goldfish

[GoldfishJon143]

I have a little oranada, who I just got and is about 1 inch, and for the past 12 hours, he/she has been chasing my little ryukin goldfish who is also 1 inch. Non stop chasing, and I don’t know what to do. They’re in a 40 gallon tank which is more than enough space I believe, since they’re only 1 inch each. The temperature of the water is exactly 70 degrees Fahrenheit. Could it be mating?

 

[CryoraptorA303]

Could it be mating?

At 10% of adult size? No way.

I have no experience with goldfish though so I'll leave that one to others.

 

[JamieBAnd]

Not big enough to mate yet, but they could be establishing who’s in charge. Get plants, lots of plants, some hard scape, create areas out of sight to let the chased one get out of sight of the other so it can rest.

 

[NotSoAggressiveAquatics]

mimo91088

 

[mimo91088]

Given the space available I doubt it's territorial. It's likely the new one is a male and is indeed chasing due to breeding behavior. Even if you have 2 males it's likely him trying to figure stuff out. Immature males will still chase while they try to figure stuff out. They're young, confused and inexperienced lol. If the other fish looks like it's getting exhausted you can try separating them for a bit, but they usually catch on eventually and stop the chasing until breeding season. Is it bumping the other fish from underneath in the vent area? How long have they been together?

 

[GoldfishJon143]

I have a little oranada, who I just got and is about 1 inch, and for the past 12 hours, he/she has been chasing my little ryukin goldfish who is also 1 inch. Non stop chasing, and I don’t know what to do. They’re in a 40 gallon tank which is more than enough space I believe, since they’re only 1 inch each. The temperature of the water is exactly 70 degrees Fahrenheit. Could it be mating?

Not big enough to mate yet, but they could be establishing who’s in charge. Get plants, lots of plants, some hard scape, create areas out of sight to let the chased one get out of sight of the other so it can rest.

Thanks you, as of now, I’ve changed up how the tank looks and it has helped, also bought a big plant for hiding

Given the space available I doubt it's territorial. It's likely the new one is a male and is indeed chasing due to breeding behavior. Even if you have 2 males it's likely him trying to figure stuff out. Immature males will still chase while they try to figure stuff out. They're young, confused and inexperienced lol. If the other fish looks like it's getting exhausted you can try separating them for a bit, but they usually catch on eventually and stop the chasing until breeding season. Is it bumping the other fish from underneath in the vent area? How long have they been together?

Thank you for replying, as of now, the oranda has stopped chasing and does swim around the ryukin now. Thank you for the info, looks like they were just getting used to each other or something like that. But the Ryukin does look exhausted, let’s see how it does tmrow

 

[NevermindIgnoreMe]

Another idea: Young goldfish often "play" and chase each other a bit. It's very cute. At this age, that's what I'd assume.

 

[mrsP]

Get as much live plants as you can, and then double amount. That gives distraction providing hidin and munching.