Corydoras Julii (behaviour?)

[kiriyama]

Hi, I have 5 Corydoras (last 5 in shop) , they have been in my tank for about 4 weeks now. 2 of them are doing something strange , they lean on each other side by side , "shoulder to shoulder" it looks like they are trying to push each other sideways , they then tip back vertically head up and then swim backwards togther. Are they just shoaling or are they "getting friendly". They are only about anm inch long , if that. Any correspondace greatly appreciated....

 

[Harlequins]

my corys were doing exactly the same a few weeks back,then last week after a water change,they started spawning,i saved 2 eggs which hatc yesterday

Whether its connected i dont know

 

[Truck]

i dont think you will have C.Julii, theyre incredibly rare...you more than likely have C.trillineatus

spawning behavior normally consists of the male trying to tickle the females belly.

 

[Inchworm]

spawning behavior normally consists of the male trying to tickle the females belly.

You're close but it's actually the other way around.

 

[Truck]

spawning behavior normally consists of the male trying to tickle the females belly.

You're close but it's actually the other way around.

lol, cheers for informing

 

[kiriyama]

my corys were doing exactly the same a few weeks back,then last week after a water change,they started spawning,i saved 2 eggs which hatc yesterday

Whether its connected i dont know

Cheers for the info , I just did a water change a few days ago, I topped up the rest of the tank tonight , usually have a basin of water from the day before to allow it to get to room temp, dechlorinator added at basin. I did motice the thermometer drop a couple of degrees after adding the water so maybe it treiggered some reaction, fingers crossed......