Hystrix bumps

[trillassgator]

I seen this while searching on Google. I do not own this fish. Are these lil bump normal? Im jus curious..


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[bonesb66]

What bumps? I can't see anything...

 

[trillassgator]

The bumps on the front of the disc.


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[sam buckle]

All elasmobranchs skin is made of dermal denticles. Essentially modified teeth. Occasionally some regress to type and form pronounced spine/spike/thorn like ones. All rays show this on the tail to a greater or lesser extent.


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[flyingsaucer owner]

Most histrix develop them on the front of their disc with age

 

[trillassgator]

Thanx for the info. I was jus curious


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[Northweststingrays]

My big hystrix girl

 

[spotfin]

What size is she and when did she develop the bumps?