I see. Well I will start off with only 2 oscar in that 100gal tank. Everyone has been loads of help and I still have alot to learn with alot of question now since Im going to do a ciclid tank. But ya with that being said. if how do I tell if an oscar is a male or female?I did the reaserch but no one is certain. So I was thinking that you guys would know. Well What I read in different articles is that the you cant really tell because they all look the same. But some say you should wait till their about 4inches, the anal fin doesnt help much, and that the color of a female is less color than that of a male.

Also for that 100gal tank what filtration would you recommend if I do get that amount of fish lets just say 2 oscar, 2jd and 2jags?

Agreed. Two oscars in the 100 or any combination of two out of the above. It may seem like a waste of space, but you will appreciate it in the end. Like I said before, ya could probly get by with a mid-sized pleco as well. But more cichlids than that is askin' for a headache.

Oscars are a bitch to sex. Most of the differences seen in other cichlids are absent. The only real way, as far as I'm concerned, is when ya can actually see the oviositor on the female and compare it to the male. Oscars seem to avoid fallin' into any consistency for sexing IME using traits such as pointed fins, color, nuchal hump and size.

WYite.

But if their only 2 inches isnt it okay? Because if they grow an inch a month and in a year their about 12inches I can assume that I should get a larger tank 6months in.

Nyet.

It's a bad bad bad bad bad bad bad bad idea. I can say bad some more if you'd like.

Once they start getting bigger, they start getting more territorial. They get more territorial they get more argumentative, then they start picking on each other and then add different sizes based on growth speed, and shit goes down hill real fast.

JDs can be dicks, Oscars are dicks, and Jags are gigantic douchebags. Nevermind the bloody stumps of death bringing horror you'll get if one of them decides to pair up with that many fish in there.

Stick with two. It will make things so very much easier for you. Honest.

But then only 2 Oscars in a 100gallion tank looks and feels weird to me.

So only 2 and nothing more?

Think of it this way.....five Rottweiler puppies in a studio apartment. Then think about five full grown rottweilers in a studio apartment. Stick with two of those fish sooner than you know they will fill out the tank and make it look small.

I my self have one nearly adult red dragon flowerhorn and one young female in a 125 gal tank with 1200 gal hour filtration , one midas in a 75 gal with 800 gal turnover , two green texans in a 125 with 1300 gal turn over and two blue escondido texans in a 75 with 800 gal healthy ,very beautiful ,happy fish

Here's another though.

If two tiny oscars look weird to you alone in a 100g tank, why not ask around at some of the local fish stores, and see if anyone has dropped off two adults.

You'll not have the issue of tank looking sparse, and they may even just give them to you since folks try to rehome adult Oscars on a pretty regular basis.

Well the thing is is that I want to raise them when their little so that they can reconize me as their father. Im giving it a though still on having to have a 200gal tank on hand and getting those fish. But ya I might as well just go with 2 oscars.

After about three days of feeding an oscar, you're their favorite person. Usually quicker.