Mating aggression gone too far ? Help 

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Joel2036

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Any kribensis experts on here ?
My pair seem to be fine for weeks but maybe once a month the male will go insane and chase the female constantly forcing her to hide behind heaters and filters

Do I need more caves and hiding places ? I have about 6-7 hides/caves that they both use all the time.
I’ve read some aggression can be normal during mating times but i think this is a bit extreme

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MacZ

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I'm no expert on kribs, but I'm pretty confident the specimen in the first pic is the female.

Otherwise... I'm used to cichlid aggression so I wouldn't even count this as extreme, but definitely something that can use some intervention. But how exactly ... I'd ask the specialists.
 

FinalFins

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I'm by no means a kribensis expert but more cover would definitely help.
 

jkkgron2

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Could you get a pic of both of them (together or apart) out in the open? If they are two females then that would explain the aggression and I think it’s a good thing to check :)
 

TWiG87

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How large is the tank? Sounds like there are ample hiding spots. It is also not unheard of for one member of a pair to be killed during spawning aggressiveness
 

coralbandit

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Welcome to Kribs !
Pictures of both might be helpful ..
The red belly does not guarantee a female at all with Kribs ..
Both sexes will at times have the color .
First pic looks like a sub dominant male IMO ?
 
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Joel2036

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This was them about a week ago. But since then he has lost a lot of his colour. Became a lot more aggressive and also seems to be a lot larger which I know sounds weird but I swear he has almost doubled in size

And Thankyou ! They are absolute awesome fish and very exciting how they are constantly changing around there tank and landscape
 
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Joel2036

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And this is them now.
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Falena

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Definitely does look to be a male and female in the second pic where they are together. I've kept and bred Kribs in the past but am no means an expert. Though I have experienced pairs that are just not compatible or a particularly aggressive male OR female. Usually once the eggs are layed, sometimes one of the pair will try to eat their own eggs or fry and thus the offender is relentlessly chased away from the spawning site in an attempt to guard them and raise them as a single parent. Have you spotted any potential eggs?
 
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Joel2036

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He does seem to be sticking to this once cave a lot more than the other since I’ve been watching this afternoon but it’s too hard to see inside. Does this mean maybe there’s eggs in there and he’s just been over protective ?
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NickGNz

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Possibly. Putting a male and female Krib together doesn’t always guarantee they will pair. I’ve had females kill males before.
If they are still fairly young it can take them a while to get things right when they do pair up. The tank looks good for them so I would just keep an eye on them and give them time
 

Falena

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Joel2036 said:
He does seem to be sticking to this once cave a lot more than the other since I’ve been watching this afternoon but it’s too hard to see inside. Does this mean maybe there’s eggs in there and he’s just been over protective ?
It is possible! It certainly happened a couple of times with mine where there were no other predators to fend off. The real problem when this does happen is whether he is capable of rearing them on his own. Especially if he's a first timer. In these cases the male often gets blamed for the aggression when really he's just an over doting daddy lol. As mentioned above it can take them a good few tries to get the hang of it. Fingers crossed! Keep an eye and if he does become a danger to her, consider moving her out for a while to see if he is in fact guarding eggs or young :)
 
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Joel2036

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Yeah she doesn’t seem happy at all she’s hiding in the corner of tanks and her colours have gone very weird so I’m thinking she’s close to calling it quits. I wish I had another tank I could put her in but I only have the one
 

jkkgron2

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Joel2036 said:
Yeah she doesn’t seem happy at all she’s hiding in the corner of tanks and her colours have gone very weird so I’m thinking she’s close to calling it quits. I wish I had another tank I could put her in but I only have the one
You could get a breeder box to separate her?
 

Falena

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Joel2036 said:
Yeah she doesn’t seem happy at all she’s hiding in the corner of tanks and her colours have gone very weird so I’m thinking she’s close to calling it quits. I wish I had another tank I could put her in but I only have the one
Aww bless her. I'm so sorry to hear it! :( unfortunately sometimes these things happen. What's happened to her colour may I ask? I only ask because I had a female that would go almost solid black when gravid. I do agree with jkkgron2, a large breeder box is a great idea for the time being until you figure out what to do. She might perk up if she feels a little safer
 
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Joel2036

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Yeah exactly the same ! I put her inside of a colander inside of the tank over night with a cave and some food and this morning she was looking so much better I think she just needed some rest. Now there back to there normal selves
 
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Joel2036

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Falena

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Oh she is stunning! Really does remind me of my old girlie I'm so glad a good nights rest has helped. I never could figure out though if the black was a spawning color or a warning one! I do believe its the latter as my girl used to become quite volatile when she went this dark and her mate would grey out and avoid her as if she was saying "give me a break" lol Don't worry though she's not sick :) this is a normal color change pattern matching whatever her mood is
 
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Joel2036

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Thanks so much for your help !
It’s amazing how much there colour changes hey !
I currently have those to kribs
4 black skirt tetras And 2 bristlenose
In a 25 gallon
Do you reckon I have any space for say some more tetras ?
 

Falena

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No problem at all :) and it certainly is! they can look like 3 different fish all in the space of a week lol. I love them for that though. They're like living mood stones.
Oh no, unfortunately you're already overstocked. A 20 gallon long is recommended for a pair of kribensis alone, and 29 minimum for a single bristlenose pleco. Also if you end up with two males they may well fight to the death in there. They're very territorial with each other and will compete for food and floor space with your kribs, upsetting both parties. They produce a lot of waste as well. Perhaps rehome or sell one or both bristlenoses (unless you plan on upgrading before they mature) and maybe get 2 more tetras if you have decent filter capacity? That would be absolute max impo. But others may make some better suggestions :)
 
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