Fish Tank Tutor

9 responses so far ↓

• 1 Shelleu // Dec 6, 2007 at 9:01 am

  I have an Oscar fish and he is about 5-6 inches and I have him in a tank with two blood parrots and they get along fine, he has not been aggressive at all, as a matter of fact he tries and stay out of thier way.

• 2 Stephanie // Jan 17, 2008 at 8:09 pm

  I have two oscar fish that are about four inches and some smaller fish that are one inch. I read above that oscar fish are suppose to be aggressive but they are actually being bitten by the one inch fish…

• 3 Steve // Feb 12, 2008 at 3:15 pm

  I have on 4inch oscar and mine has been aggressive towards my 5inch plec. And he is well feed 55g of space.

• 4 Nicholas // Apr 1, 2008 at 12:18 pm

  I have 3 four inch Oscar together with 9 pachu (5-6 inch), 2 Patin and another 4 fishes. as stated above they are extremely smart and good hunter. They get along well with my other fish in the 50 gallon tank. They are big eater and react very fast during feeding this sometime may cause not enough food for their tank mate.

• 5 Sarah // Apr 2, 2008 at 8:43 pm

  I need help with my baby. His name is Rusty and I’m afraid he has HITH, but I’m hoping it’s something else. I’ve removed the activated charcoal, done a water change. He’s still eating, but has had some muscus like stool. I found a little strand in the tank, looked like tomato seeds and some on the charcoal bag from the filter. The wound is on the surface, not pit like, so I’m hoping it’s just a wound that isn’t healing. I’m adding aquarium salt on Friday, unless someone has something else to offer. The nitrates were high so I did a water change today and want to give the tank a chance to settle before adding anything else. I have pictures if someone can help.

• 6 Clifford // Apr 3, 2008 at 5:30 pm

  My Oscar was not aggresive when he was small but now he is very aggresive. He was first in a tank with mollies and guppies and was doing fine at about 2 inches long, but once he got about 4 inches long he is a straight killer now, he ate everything. He even ate my albino black clawed frog which was about 2 1/2 inches long. So he is all by himself now and i think he really likes it. Now he is growing really fast, but of course he is eating a lot: pellets, blood worms, ghost shrimps, and feeder fish, oh yeah and guppies, mollies, and black clawed frogs!

• 7 Eric // Apr 5, 2008 at 9:58 am

  Sarah,
  My only other suggestion if you think you are dealing with Hole in the Head is to make sure you have a balanced diet for him. This is generally accepted as the cause for it.

• 8 Hevach // Apr 15, 2008 at 11:02 pm

  The number one rule of an oscar tank is that anything that can potentially fit in its (very large) mouth eventually WILL end up in its mouth. Mine even ate the pleco I kept him with, so I replaced it with a catfish bigger than he’ll ever get, and he leaves it alone. But he’ll eat anything else in the tank - I actually used him to dispose of several tiger barbs that were getting too disruptive for my community tank (Dummies even tried nipping the oscar’s fins, but he didn’t put up with it for long).

  IMO, if you’re going to put one in a tank with other fish, make sure he’s the smallest thing in the tank at any given time, just to be safe. Even the “bigger than his mouth” rule doesn’t always work, as I’ve heard of them trying to swallow fish nearly their own size, even to the point of unhinging their jaw in the process:

• 9 Jean // May 1, 2008 at 1:24 pm

  Has anyone heard of oscars changing colors? I have 2 that are the same coppery/green colors and at different times they lose all of the dark green and are totally copper almost gold.

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