How many ottos & gups in 8 gals? - The Planted Tank Forum
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post #1 of 5 (permalink) Old 07-18-2005, 08:03 PM Thread Starter
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How many ottos & gups in 8 gals?

I was at a lps (one which I don't go to often since they're fish are in poor conditions) and I actually saw some tiny little ottos! I was so excited! The lfs has never had them in the past 4 or so months I've been going there. I only bought 2 since I don't know how many my tank will hold. They're such diligent little algae eaters And they cost about the same as guppies (about $2)

My tank is an 8 gal moderately planted and 50% WC each week. If I could, I'd like to have 3 ottos but with the 1cm/litre rule that works out to only 5 guppies. This seems so little. Could I safely stock more? (The ottos should grow to be about 3.7cm)

And could someone help me figure out if I have 2 males or is 1 a female? I don't know how plump, plump is for an otto

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post #2 of 5 (permalink) Old 07-18-2005, 09:11 PM
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Actually, its more like 0.67 cm/l converting from 1 inch / Gal (US). While on the subject, many of local aquarists in Hong Kong and Taiwan claimed that the book The Optimum Aquarium suggested a 1cm / litre guideline, but I found that its a mistake on the translation which has never been corrected (who doesn't want to keep more?), the original guideline is 1 cm / 2 L, and also mentioned 2/3 inch per gallon. Not to mention its for a much larger tank than yours; the smaller the tank, the more likely anything would go wrong, and when that happens, things can get rather nasty very rapidly in an over populated small tank, therefore I would suggest that don't even go close to the rule for a small tank.

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post #3 of 5 (permalink) Old 07-18-2005, 10:37 PM
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The ottos don't add much to the bioload, so you can have 3 or 4. As for the guppies I wouldn't go with too many. I personally like small tanks that have just one pair. It makes them stand out more. BTW, I'm assuming that this tank has decent filteration, am I right? Ottos like to be in groups of at least 3, so I'd get one or two more if I were you. Good Luck!
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post #4 of 5 (permalink) Old 07-18-2005, 11:50 PM
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And if you have females and male guppies you will soon have lots and lots of guppies. I wouldnt go more than three otos. Its the guppies I think that will pose a bigger problem unless the parents eat em all! Yum!
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post #5 of 5 (permalink) Old 07-19-2005, 07:49 PM Thread Starter
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I already have 16 fry that I'm raising in another tank :P And I don't even have any males haha. OK I'm going to go get 1 more otto. If I end up with male and females ottos, then these things won't churn out babies like guppies right

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