i belive that digger's hystrix were some of the same batch as mine which would be the same age and his have been breeding... i will clarify this with him and see.
Breeding... and hybrids. hystrix x motoro
- Thread starter keepinfish
- Start date
I dug out a copy of a paper by Patricia Charvet-Almeida et al, 2005. Reproductive Aspects of Freshwater Stingrays (Chondrichthyes: Potamotrygonidae) in the Brazilian Amazon Basin. One of the ray species studied was Potamotrygon sp. C, or the Brazilian hystrix. The authors found these rays mature at an early age (estimated at 2 years) and at a fairly small size; females @170 mm, males @160 mm disc width. They also suggested reproduction was triggered by changes in the hydrologic cycle.
If this is the case, how come we don't have pups yet?????
If this is the case, how come we don't have pups yet?????
very interesting! Kinda hard to believe, but my other male hystrix i lost was rolled claspers at 6".
After speaking with digger a while back he also believe that is what triggered his hystrix was hydroligic cycle. he did some experiments with water temp to replicate rainy season. He said it worked,.
how big are yours now Jason?
After speaking with digger a while back he also believe that is what triggered his hystrix was hydroligic cycle. he did some experiments with water temp to replicate rainy season. He said it worked,.
how big are yours now Jason?
My male is 8.5-9" and both females are 7.5-8". The male has had rolled claspers for about a year now I would guess.
Maybe digger will share his secrets?
No problem. I actually got this paper from Miles a few years ago.
I wonder if more frequent water changes coupled with dropping the temp for a period of time would simulate a rainy season, thus triggering a spawn.
that is exactly what digger did. He said he did this for a week or two i believe. i just sent him a message to give his input
keepin, lets do what we talked about and let me ship you this male. 
hes well over 8 inch disc and needs some ladies!!! i know they arent comparable but that is exactly what i do with my piranhas, i have been breeding them for 4 years now and to trigger a spawn i do a large water change and drop the temp considerably for about 3-5 days, i then spike the temp into the 80's. i pretty much can have a spawn whenever i want.... i also leave a "moonlight" on for them. i don't know when rays breed but who knows??? being that we don't see many CB hystrix, they could be a little trickier then some of the other species that we all keep. i know my motoros dont give a damn what time of day or water temp, when he wants it he gets it.
hes well over 8 inch disc and needs some ladies!!! i know they arent comparable but that is exactly what i do with my piranhas, i have been breeding them for 4 years now and to trigger a spawn i do a large water change and drop the temp considerably for about 3-5 days, i then spike the temp into the 80's. i pretty much can have a spawn whenever i want.... i also leave a "moonlight" on for them. i don't know when rays breed but who knows??? being that we don't see many CB hystrix, they could be a little trickier then some of the other species that we all keep. i know my motoros dont give a damn what time of day or water temp, when he wants it he gets it.