So why Are Blue Spot Rays so difficult?

[myerst22]

Hello all. Looking to try something different and considering keeping a species only 180 of blue spot rays with the intention of trying to breed them. I have kept, bred, and raised freshwater motoros and teacups with no problem. So why are these rays so difficult to keep? I know that some aquariums have successfully bred the blue spots. Tim

 

[aquaknight]

https://www.saltwaterfish.com/vb/showthread.php?t=327011
(Specifically my posts within)
Additionally, I think 180 would not be enough

 

[sepulatian]

Originally Posted by myerst22
http:///forum/post/2813609
Hello all. Looking to try something different and considering keeping a species only 180 of blue spot rays with the intention of trying to breed them. I have kept, bred, and raised freshwater motoros and teacups with no problem. So why are these rays so difficult to keep? I know that some aquariums have successfully bred the blue spots. Tim
Out of curiosity, what sized tank did you have for the Montoros and teacups? What were the water parameters? I too am a fan of rays and have FW tanks as well as salt.