Yeah, she's probably about that size.Yeah, it’s hard to tell its exact size, but I’d guess it’s between 5 to 6 inches.
Also, I wanted to ask about the venting process. Does it stress the fish out a lot? Do they continue to sulk afterward? I want to determine the sex of mine, but I’m worried about causing too much stress.
Your method works just fineIf your fish is food motivated at all you can vent that way.
As seen here I tease my Oscar with some food and she swims nearly vertical to get it as soon as it hits the water.
View attachment 1549272
Then use the zoom function in editing View attachment 1549273
And you can vent your fish stress free. Two small holes is a male. One small one bigger it's female