Should my sea cucumber always have his tentacles out?

BRS

djryan2000

Active Member
View Badges
Joined
Sep 26, 2020
Messages
168
Reaction score
101
Review score
+0 /0 /-0
Location
USA
I purchased a yellow sea cucumber, Colochirus robustus, from my LFS yesterday. As my post history shows, I panicked when I first added him as their salinity was lower than expected - it was two points lower than my DT. I dripped him for about 90 minutes and then added him as the salinities matched. He quickly moved and found a spot on my glass and extended the tentacles to feed. He accepted food later last night. When I woke up he had his tentacles out but when I just went to feed him he had closed tentacles. Should I be concerned?
 
Fritz
OP
djryan2000

djryan2000

Active Member
View Badges
Joined
Sep 26, 2020
Messages
168
Reaction score
101
Review score
+0 /0 /-0
Location
USA
upon some experimentation I realized he is closing the tentacles due to me blocking the light from my window when I walk in the room. I went to the opposite side and waited 5 minutes and he opened back up.
 

vetteguy53081

Well known Member and monster tank lover
View Badges
Joined
Aug 11, 2013
Messages
48,751
Reaction score
110,628
Review score
+0 /0 /-0
Location
Wisconsin - Florida in several months
the only time I see them retract when he pulls food in. I realized it was because I was scaring him by blocking the window's light.
That will do it- reaction
 
Corals.com

vetteguy53081

Well known Member and monster tank lover
View Badges
Joined
Aug 11, 2013
Messages
48,751
Reaction score
110,628
Review score
+0 /0 /-0
Location
Wisconsin - Florida in several months
What are you feeding? I've tried a few times with these guys and they all died on me even when other filter feeders like coco worms and porcelain crabs were happy.
Thet eat liquid or dried phyto and zoo plankton. They will also benefit from the substrate being stirred regularly releasing bacteria and detritus into the water.
 
OP
djryan2000

djryan2000

Active Member
View Badges
Joined
Sep 26, 2020
Messages
168
Reaction score
101
Review score
+0 /0 /-0
Location
USA
What are you feeding? I've tried a few times with these guys and they all died on me even when other filter feeders like coco worms and porcelain crabs were happy.
Currently, a mix of Coral Max coral food (phyto based), Can O’ Cyclops, baby brine eggs, and BRS copepod powder. I just took the food I give to my dragonet and gave it to him too and I’ve seen a feeding response. I’m probably going to refine his feeding so I only give him phyto based foods. I’ve only had him for a day now.... so I haven’t exactly successfully kept one yet. LFS associates thought my mix of food would work though.
 
OP
djryan2000

djryan2000

Active Member
View Badges
Joined
Sep 26, 2020
Messages
168
Reaction score
101
Review score
+0 /0 /-0
Location
USA
What are you feeding? I've tried a few times with these guys and they all died on me even when other filter feeders like coco worms and porcelain crabs were happy.
I spoke too soon. He was open that day but the last two days has been closed during the daytime. Once it’s later (8pmish and later) he’s open. Is this normal?
 

Ghost25

Active Member
View Badges
Joined
Jul 9, 2018
Messages
234
Reaction score
239
Review score
+0 /0 /-0
I spoke too soon. He was open that day but the last two days has been closed during the daytime. Once it’s later (8pmish and later) he’s open. Is this normal?
My experience was that they had their mouth parts extended for 1-3 weeks then started closing up more frequently until they stayed closed. They look fine otherwise but when I finally try to pick them up they are adheared to the rock but totally stiff and dead.
 
Zoanthids
OP
djryan2000

djryan2000

Active Member
View Badges
Joined
Sep 26, 2020
Messages
168
Reaction score
101
Review score
+0 /0 /-0
Location
USA
My experience was that they had their mouth parts extended for 1-3 weeks then started closing up more frequently until they stayed closed. They look fine otherwise but when I finally try to pick them up they are adheared to the rock but totally stiff and dead.
I called my LFS who said to expect them to be nocturnal. Mine is open at night. Added nopox to my doser in case nitrates were too high. I’ll watch out for that. Thank you.
 
BRS

Do you house a "Reef Safe" Angelfish in your reef tank?

  • YES and it's going good

    Votes: 158 41.3%
  • YES but it's not working out

    Votes: 10 2.6%
  • NO I have tried it in the past and it didn't work out

    Votes: 35 9.1%
  • NO I haven't tried yet

    Votes: 168 43.9%
  • Other (please explain)

    Votes: 12 3.1%
NYOS
Top