Coral feeder tentacle pix
Here are some photo's of coral feeder tentacles, or basically comparisons of how the coral looks when the tentacles are retracted and then extended:
With tentacles retracted, this coral cannot consume large food items; it's primarily in photosynthesis-mode in this pic:
At night, short feeder tentacles are extended. The green 'centers' lead to individual 'mouths', so this one brain coral could potentially consume dozens of mysis shrimp in one setting. This coral is also capable of extending longer sweepers about 4" in length (not present in this photo), in addition to the feeders:
Feeder tentacles extended. This acan has a very quick feeding response and each polyp can 'put away' mysis shrimp in rapid succession:
More to follow....
This coral is completely non-photosynthetic, so it must be fed in order to survive and thrive. Primarily a nocturnal feeder, it's typically 'closed' during the day:
The polyps of the orange and black sun coral polyps open up right about 30min before the lights go out and close again when the lights come back on. In addition to being spot fed by me, it captures live mysid shrimp which come out at night:
The feeders are partially extended. They do this sometimes when they sense food in the water.
Feeders fully extended
It's amazing how all those polyps form into one skeleton, and eat at night when most coral-eating fish are asleep. The second pic of the Acanthastrea is definite POTM material. It's nice that you were able to get those pix!
"Everybody knows, you only live a day, but it's brilliant anyway..."
20g nano reef
55g FOWLR saltwater
29g planted freshwater
10g planted freshwater
These 'brains' are capable of eating large quantities of food as well as larger food items, such as whole krill (which are too big for the other corals I've posted to consume). When bigger they will be able to take in silversides.
Very, very nice, Kaybee. I adore seeing corals in such health.
When a finger points to the moon, the imbecile looks at the finger.
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Great pics. That is one of the things I enjoy most about keeping a reef. Watching corals change shape and do different things to serve different functions. Very cool.
Thanks for sharing.
90G Reef Build Thread
90 Gallon Reef: Ocellaris Clowns, Midas Blenny, Ignitus Anthias, Various inverts
20 Gallon SW Quarantine: Exquisite Wrasse
10 Gallon SW Quarantine: Empty
55 Gallon Community: Neon Tetras, Gold Neon Tetras, GloFish, Corydoras (paleatus & trilineatus), Otocinclus, Mollies, Platies, Apple Snails
5 Gallon: Crowntail Betta, African Dwarf Frog
Wow this is an awesome post, thanks for taking the time. You got some great looking corals and some nice shots of them. Nice job! Defnitely cool to see what they look like in feeder mode.
Those are amazing!! And very beautiful!! I'd be up all night looking and watching them...LOL! Thanks for sharing!
I love seeing my LPS do that at night!