Knives and rays....experiences..?
- Thread starter Toohard
- Start date
I've got a 24+inch royal clown knife with mine, amongst other, never bother each other, even my smaller 6inch Leo. Even when going for the same food
http://www.monsterfishkeepers.com/forums/showthread.php?600691-Possibly-the-largest-BGK-in-captivity
Most certainly do. I will add the link to the post i made today. Pics and video with measuring tape!
Thanks for sharing, enjoyed reading the thread. Inspiring to grow mine that big, which on a diet of massivore and hand feeding night crawlers won't take too long I hope 😄
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It took a while to be honest. He's "plateaued" now, and slowed signifigantly after about 12-14 inches. He has been fed a steady diet of hikari bloodworms(frozen) when he was smaller, and now he eats hikari cichlid gold sinking pellets. I've tried massivore but he has less than no interest. I have heard great things about beef heart too. I think the key is to keep them without stress. I have given him his own private cave his whole life. Also it eats from my hand!
Knife fish are natural and favorite prey for rays. Knife fish are electrical transmitters, its how they find each other in murky water.
Rays hunt using electro receptors (ampullae of Lorenzini)
It is not 'if' it is only 'when' the ray finally takes the knife fish. Even size difference won't necessary stop them.
The rays will find a way to either suck or blow the knife out of its cave.
The only way to balance that mix is to make sure the ray is never hungry...and even then often they will take the knife and just eat its head.
If anyone has a different experience it is only that the law of averages hasn't closed in on them yet.
There is only 1 rule in the Amazon: "Everything eats everything else"
Catfish are another ray favorite. Catfish is often the bait used to catch rays, they have a hard time resisting them
Rays hunt using electro receptors (ampullae of Lorenzini)
It is not 'if' it is only 'when' the ray finally takes the knife fish. Even size difference won't necessary stop them.
The rays will find a way to either suck or blow the knife out of its cave.
The only way to balance that mix is to make sure the ray is never hungry...and even then often they will take the knife and just eat its head.
If anyone has a different experience it is only that the law of averages hasn't closed in on them yet.
There is only 1 rule in the Amazon: "Everything eats everything else"
Catfish are another ray favorite. Catfish is often the bait used to catch rays, they have a hard time resisting them
I had the same experience, also with blond knife fish which were really hard to find at that time ( are they still?).......in one evening one ray destroyed my population of about 25...about $2k worth at that time......then my 14" Juruense...then my 20" tigrinus....... sigh
