• Hello guest! Are you an Apistogramma enthusiast? If so we invite you to join our community and see what it has to offer. Our site is specifically designed for you and it's a great place for Apisto enthusiasts to meet online. Once you join you'll be able to post messages, upload pictures of your fish and tanks and have a great time with other Apisto enthusiasts. Sign up today!

sexing juvenile apistogramma cacatuoides

kaku

New Member
Messages
16
Location
Australia
I need help sexing all 3 of these fish they are juvenile cacatuoides and 2 of them are showing aggression. The place I bought them from accidentally gave me 3 and now pic 2 and pic 3 are being aggressive. Can you help me sex them and tell me what I should do?
 

Attachments

  • 20230801_120400.png
    20230801_120400.png
    3.2 MB · Views: 64
  • 20230801_120354.png
    20230801_120354.png
    5.1 MB · Views: 64
  • 20230801_120032.png
    20230801_120032.png
    5.3 MB · Views: 67

Mike Wise

Moderator
Staff member
5 Year Member
Messages
11,173
Location
Denver, Colorado, U.S.A.
I think that the excessive aggression is probably due to too much open space and not enough hiding places. In these cases I keep a 3"/7.5cm, ½"/1.25cm diameter piece of floating (PBS) pipe in the tank. If the fish finds sanctuary in it, it is time to remove the fish.
 

kaku

New Member
Messages
16
Location
Australia
okay cool, thanks for the reply I will try something like that and see how they react. if one of them does take refuge though should i remove the one causing the aggression (pic 3) or the one with the yellow (pic 2) because the one with the yellow seems to try and get (suspected female - pic 1) away from the fish making the aggression and then sort of protects them.

Would PVC pipes work as well or is they like a toxic coating on them?
 
Last edited:

kaku

New Member
Messages
16
Location
Australia
this is a picture from bunnings about the PVC pipe i was looking at but i don't know if you can get anything from it. i added it just in case it could help.
 

Attachments

  • 1691064169508.png
    1691064169508.png
    32.8 KB · Views: 53

Mike Wise

Moderator
Staff member
5 Year Member
Messages
11,173
Location
Denver, Colorado, U.S.A.
PVC sinks, PBS floats, so PVC doesn't work for this. I do use PVC pieces as bottom hiding places in quarantine and grow-out tanks. It is easier to remove than other aquascaping when catching fish.

Any apisto that hides at the surface of a tank is one that has lost in the struggle for territory and should be removed. If the aggressor turns on the other fish, well it is time to switch and see what happens. Note that females tend to be more aggressive toward other female than do males with males.
 

Ben Rhau

Apisto Club
Messages
563
Location
San Francisco
I couldn’t find any PBS pipe, but it’s easy to find plastic film canisters (online) which are made of HDPE. They float.
 

kaku

New Member
Messages
16
Location
Australia
Thanks I will try and see if I can float pvc with fishing line and fishing floats and then follow your advice
 

kaku

New Member
Messages
16
Location
Australia
I just had a look PVC is the only ones they have in that size so will attach it to something to float it.
Thanks.
 
Last edited:

kaku

New Member
Messages
16
Location
Australia
I have added something similar to the tank and I'm just wondering if I remove the one causing the aggression or the one seeking refuge?
the smallest one is the one taking refuge by the way. one more question. so the one causing the aggression (suspected female) has been shaking their caudal fin at the suspected male and then he will shake it back then followed by like a spin to which the suspected female chases him off. is this courting or are they like marking their territories?
 

kaku

New Member
Messages
16
Location
Australia
sorry I'm a bit confused.
So do I remove the smallest one that's taking refuge or the the suspected male who shakes his caudal back at the suspected female because they it doesn't seem like they are being aggressive anymore they are sort of sticking together now.
 

MacZ

Well-Known Member
Messages
2,902
Location
Germany
Actually I'm confused now. By spinning you mean circling around each other, right? That would be fighting, then.
I'd usually remove the fish that gets the short end of the stick.

Probably it's the way you describe it that makes it hard to grasp. Many of us here are used to certain terms to describe behaviours.

So they are waving their caudals against each other? Up to that point it could be courting.
If the female moves on, still waving here and there and the male follows: Still courting.
If they start circling around each other they are fighting. The losing fish then tries to escape. If a female does that to a male she's either rejecting him or there has already been a spawn and she wants him out of her territory.
The fact that you know say they stay together is the confusing part. Although, well, it's not impossible they changed their minds.

And you have one fish that's pushed into hiding: That one has to be moved.
 

kaku

New Member
Messages
16
Location
Australia
ok thanks I will give it to a mate and by the way you described it they are courting but they are still juveniles about 1 1/2 inches or 3.5 cm. the female also has gotten fatter around the belly sort of how bettas look like when they have eggs. the pair seem to not be aggressive anymore but when they are together they are together the male is very protective of her. I'll just see what happens but for now I will just assume they are courting. another thing I have noticed though is that the male tries to push her into the back corner and then defends her from the other fish.
edit: so i have also noticed that the female isn't aggressive anymore it's the male and if the male shakes his caudal and the female doesn't he will chase her off but when she does he is fine with her and he gets protective over her.
 
Last edited:

Members online

Forum statistics

Threads
17,878
Messages
115,900
Members
12,997
Latest member
TheGjboz

Latest profile posts

EDO
Longtime fish enthusiast for over 70years......keen on Apistos now. How do I post videos?
Looking for some help with fighting electric blue rams :(
Partial updated Peruvian list have more than this. Please PM FOR ANY QUESTIONS so hard to post with all the ads poping up every 2 seconds….
我的英语很差,请原谅我!
Top