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Philnominal 02-19-2012 07:33 PM

Bolivian ram pair
I'd just like to find out for sure what I believe is a pair in my 75 gallon tank actual genders. They swim together regularly but sometimes do get into fights. (lip locking) i figure with how peaceful they tend to be even 2 males should be fine in a 75 gallon tank as their is plenty of room for them to get away from each other.

them together,

I believe this one is male (only had them a week or so, starting to color up)

The one i believe to be female.

And a video which has them in it, was trying to get a vid of my panda garra cleaning my gf's hand but they stopped as i started tapping. :/

37b028d2.mp4 video by Philnominal - Photobucket

Thanks, and yes i know the tank is dirty. Just got done feeding them and my mom decided to feed them more. :/ Doing water changes tomorrow anyways.

GwenInNM 02-20-2012 08:10 AM

You may have to wait till they are a bit older to start sexing, but I cut/paste this information I found online, below. Hope it helps. I've heard that male/female pairs can also not work out, that's why I have just one :-D The male can kill the female when she is not receptive to breeding, but yours are young. Give it time. They may be trying to establish territories. You may need to create some natural barriers, that block line of site, via drift wood, plants etc. You have a big enough tank to probably make this work, IMO.

One of the most sure-fire ways to sex bolivian rams is to examine the ventrical differences. In the picture below, we have a male in the top frame and a female in the bottom frame. Note that the male's breeding tube is smaller and more pointed, while the female's is rounded and a bit larger, since it's designed to pass eggs. You can also see that the male's body tapers downwards from the breeding tube to the anal fin, while the female's body tapers upwards slightly from the ovipositor to the anal fin.

Another common (though not 100% reliable) method of determining sex is by the dorsal fin. Note in the picture of the female above, there is a gradual slope to the rays of the fins, with only a very slight elongation of the third ray. Many males, on the other hand, have a much more elongated third/fourth dorsal ray, as seen here:

beetlebz 02-20-2012 10:21 AM

2nd picture i cant tell, but the 3rd picture is either a female or immature male, but its really hard to tell without their dorsal fins sticking up. Traditionally, long trailing tail fins was a male trait, but thats proven somewhat unreliable.

Based on the pointed head shape of pic 2, and the rounded head shape in pic 3, i would suspect you are correct. 2 male, 3 female. In my experience, the bellies CAN be a give away too. The males have an almost african cichlid looking flat or sunken belly, while the females are rounder, and have a curve to the belly.

Philnominal 02-21-2012 04:59 PM

Closer inspection it does appear to be male and female. The male is the biggest thing in the tank (for now) besides the silver dollars and a leopard sailfin pleco so he thinks he is the boss. Consequentially he is keeping the female in one quarter of the the tank for now, though i have seen them swimming together several times.

This video is what i saw today during feeding time. Apparently he wanted the new life spectrum to himself.
01cd8317.mp4 video by Philnominal - Photobucket

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