What fish to keep and what to donate in my 90 gallon
- Thread starter bearcat
- Start date
Not compatible with oscars, unable to handle poor quality water, and can easily have their growth stunted by being kept in too-small tanks even while they are small.
Oscar alone overstocks the tank, so any additional fish is just asking for problems.
How about a 180 gallon and keep all but 2 loaches and 2 dollars?Forgot to mention the excellent point by
edit: since the fish have been in the 90 gal for over four months with high nitrates (for 3) will the Oscar get past 10 inches? And clown knife past 18?
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I don't believe that will work, for the following reasons:
-Clown knifes get to 90cm+, far too big for a 681 liter.
-Common plecos get to 61cm, also too big for a 681 liter.
-A 681 liter is probably not big enough for the species of silver dollars you want. Here is how fast much smaller silver dollars can swim: https://www.monsterfishkeepers.com/forums/threads/oscars-for-the-125.716041/page-5#post-8085501
-Clown loaches get too big and too active for a 681 liter, unless perhaps it's a very shallow one with a 2.42m x 77cm footprint. I would not advise keeping adult sized ones in anything smaller than this footprint long term.
-You need at least 6 clown loaches. Removing 2 is not recommended.
-The larger tank does not remove the compatibility issue with the oscar.
Good luck!
Edit: I'll leave someone else to comment on the oscar and knife as I'm not familiar with how long high NO3 takes to harm them. But I wouldn't be surprised at all if they were already stunted.
-Clown knifes get to 90cm+, far too big for a 681 liter.
-Common plecos get to 61cm, also too big for a 681 liter.
-A 681 liter is probably not big enough for the species of silver dollars you want. Here is how fast much smaller silver dollars can swim: https://www.monsterfishkeepers.com/forums/threads/oscars-for-the-125.716041/page-5#post-8085501
-Clown loaches get too big and too active for a 681 liter, unless perhaps it's a very shallow one with a 2.42m x 77cm footprint. I would not advise keeping adult sized ones in anything smaller than this footprint long term.
-You need at least 6 clown loaches. Removing 2 is not recommended.
-The larger tank does not remove the compatibility issue with the oscar.
Good luck!
Edit: I'll leave someone else to comment on the oscar and knife as I'm not familiar with how long high NO3 takes to harm them. But I wouldn't be surprised at all if they were already stunted.
At any age high nitrates are a problem, problems just get more and more visible as they age.
Silvers are nervous, schooling fish, and clown loaches aren’t much better, the bigger the school the better.
I see clown knife still getting too big for a 180, and the pleco is also still a problem (really in any tank).
Silvers are nervous, schooling fish, and clown loaches aren’t much better, the bigger the school the better.
I see clown knife still getting too big for a 180, and the pleco is also still a problem (really in any tank).
SD's do best in a group of 8 or larger, but are a huge bioload once they start getting to 5-6". They are very ravenous fast eaters, forcing you to overfeed them in order to feed the rest of the fish.
Imo a solo Oscar would be fine in a tank like that. I’ve kept a pair in a 75g up until they hit 8” and then moved them to a 125g. Would something larger than 90g be ideal? Of course but I don’t think it is going to be detrimental to the Oscar’s growth and development at all, as long as you do your part. I think that water volume is almost more important that floor space when it comes to oscars (within reason) so maybe us a sump or large canister to up the water volume.
