Change Page: < 12 | Showing page 2 of 2, messages 21 to 38 of 38 - powered by ASPPlayground.NET Forum Trial Version
Author
|
Message
|
Re:Harlequin Shrimp (Hymenocera elegans ) *
Tuesday, December 6, 2011 11:01 AM
( permalink)
What are you feeding the parents ?
|
|
|
Re:Harlequin Shrimp (Hymenocera elegans ) *
Tuesday, December 6, 2011 5:00 PM
( permalink)
The parents are just eating the little white stars out of my tank. There are still thousands of them in there.
RLTW 180 Gallon Mixed Reef Then I heard the voice of the Lord saying, "Whom shall I send? And who will go for us?" And I said, "Here am I. Send me!" Isaiah 6:8
|
|
|
Re:Harlequin Shrimp (Hymenocera elegans ) *
Tuesday, December 6, 2011 5:01 PM
( permalink)
COMMERCIAL CULTURE OF THE HARLEQUIN SHRIMP Hymenocera picta AND OTHER ORNAMENTAL MARINE SHRIMPS Syd Kraul Harlequin shrimp are fairly rare in Hawaii and therefore fetch a good price ($7-10 each) to the diver or aquaculturist. After shipping, retail price can be as much as $50 or more per shrimp. Limits to commercial production are primarily market demand. With over 1,000 shrimp in stock, our distributor could only sell more than 100 shrimp per month, primarily in Asia. This market might be expanded to other areas, but it doesnt seem likely that this single species would support a business. There are also rumors that mass quantities of similar shrimp are available from Central America and Africa at greatly reduced prices. Adult Harlequin Shrimp are long lived and docile, and spawn every 3 weeks at 25 degrees Celsius. Females produce 200-5,000 eggs per spawn, attaching them to their pleopods (abdominal plates) for incubation. The eggs, about 0.8 by 0.6mm, are red when first deposited. A few days before the female molts, the previous batch of eggs hatches out to begin the planktonic larval phase. Newly hatched larvae are 0.64mm wide and O.43mm high at the cephalothorax (head and chest), and 1.4mm long, in their naturally flexed posture (2.3mm stretched out straight). The first few days, these zoeae have close-set eyes, and do not require food. After the first larval molt, their eyes protrude on stalks, and they begin feeding on plankton. We provide them with rotifers, copepods, brine shrimp, and phytoplankton throughout their larval life. Rearing success is greatly improved when copepods are included in the larval diet, as is the case for all marine larvae we have raised. These larvae have relatively stringent water quality requirements, and are more difficult to raise than small damselfishes. After 4-8 weeks, larvae are about 3mm long and 2mm wide, and have branched pleopods, indicating that they have reached their final (mysid) larval stage. They are now ready to settle out of the plankton, and metamorphose into benthic shrimp. The benthic transition appears to be an important determinant of final survival. Healthy batches of larvae will all survive and grow to adults. Unhealthy batches may metamorphose and begin feeding, but suffer heavy losses within a week or two. Although artificial feeds might improve the marketability of Harlequin shrimp, the only feed that has worked for us is live sea stars, preferably Linckia spp. Harlequin shrimp were once proposed as “saviors of the reef” because they are able to eat the reef destroying Crown of Thorns starfish. In Kona, Crown-of-Thorns are the most readily available stars, so they are our primary feed.
RLTW 180 Gallon Mixed Reef Then I heard the voice of the Lord saying, "Whom shall I send? And who will go for us?" And I said, "Here am I. Send me!" Isaiah 6:8
|
|
|
Re:Harlequin Shrimp (Hymenocera elegans ) *
Tuesday, December 6, 2011 5:39 PM
( permalink)
RLTW 180 Gallon Mixed Reef Then I heard the voice of the Lord saying, "Whom shall I send? And who will go for us?" And I said, "Here am I. Send me!" Isaiah 6:8
|
|
|
Re:Harlequin Shrimp (Hymenocera elegans ) *
Tuesday, December 20, 2011 6:49 PM
( permalink)
 Any clue on what to think if one goes A.W.O.L.? I am missing the smaller one, the one that had more rose/pink in color... I am hoping that maybe it just found shelter in a crevice of a rock I can't see... to molt maybe? Do they do this? I have not seen it for the past 2 days- I am not wanting to take my rock out and disturb everything..(but I am getting anxious, lol).. so I put a new star in this evening, in hopes of luring it out - the blue one came right away. Any ideas? It's a biocube.. male mandarin, the 2 harlequins, and the 2 albino clowns- nothing else except a couple tiny tiny blue leg hermits, and the remnants of the choco chip star. Not able to get out of the tank, not in the filter, or overflow (I checked) ...nothing would have attacked it. And I don't see the body anywhere with peeking into the rocks/caves.... any ideas?
|
|
|
Re:Harlequin Shrimp (Hymenocera elegans ) *
Wednesday, December 21, 2011 6:31 PM
( permalink)
I pulled out every rock... so sad. No trace of the shrimp (he/she) is M.I.A.) I want to cry
|
|
|
Re:Harlequin Shrimp (Hymenocera elegans ) *
Wednesday, December 21, 2011 8:47 PM
( permalink)
I sure hope it shows up for you. You just never know with these things. I've had them up on the sides of the tank, near the top too, when those little stars were out and about.
RLTW 180 Gallon Mixed Reef Then I heard the voice of the Lord saying, "Whom shall I send? And who will go for us?" And I said, "Here am I. Send me!" Isaiah 6:8
|
|
|
Re:Harlequin Shrimp (Hymenocera elegans ) *
Wednesday, December 21, 2011 9:07 PM
( permalink)
Thanks- I just read that , lol, and ran to the tank to check.... nothing. I hope it turns up ... I will be very sad, but even more confused- where the (bleep) could it have gone to?
|
|
|
Re:Harlequin Shrimp (Hymenocera elegans ) *
Wednesday, December 21, 2011 9:38 PM
( permalink)
have you seen any recent molts? Do your fish gobble them up? and I just went to look for mine and couldn't find either. I'm sure they are there though. They molt about ever 16 to 18 days, if things are right.
RLTW 180 Gallon Mixed Reef Then I heard the voice of the Lord saying, "Whom shall I send? And who will go for us?" And I said, "Here am I. Send me!" Isaiah 6:8
|
|
|
Re:Harlequin Shrimp (Hymenocera elegans ) *
Thursday, December 22, 2011 6:01 PM
( permalink)
No molt that I know of, was just a guess No evidence of a molt. No sign today of the MIA culprit Still looking every morning/evening... was thinking of adding (another) star to maybe coax her out.. a buffet!
|
|
|
Re:Harlequin Shrimp (Hymenocera elegans ) *
Thursday, December 22, 2011 6:33 PM
( permalink)
Mine have been coming out in the evening or at night. I sure hope you find yours though.
RLTW 180 Gallon Mixed Reef Then I heard the voice of the Lord saying, "Whom shall I send? And who will go for us?" And I said, "Here am I. Send me!" Isaiah 6:8
|
|
|
Re:Harlequin Shrimp (Hymenocera elegans ) *
Saturday, December 24, 2011 7:54 AM
( permalink)
Just re-reading this thread again - I've got a pair with a huge female who is tending eggs, hoping to give them a shot. Thanks for the links!
|
|
|
Re:Harlequin Shrimp (Hymenocera elegans ) *
Saturday, December 24, 2011 9:18 AM
( permalink)
how awesome!!! Keep a good journal for us!
RLTW 180 Gallon Mixed Reef Then I heard the voice of the Lord saying, "Whom shall I send? And who will go for us?" And I said, "Here am I. Send me!" Isaiah 6:8
|
|
|
Re:Harlequin Shrimp (Hymenocera elegans ) *
Saturday, December 24, 2011 6:41 PM
( permalink)
 Originally Posted by Arc Katana
Just re-reading this thread again - I've got a pair with a huge female who is tending eggs, hoping to give them a shot. Thanks for the links!
|
|
|
Re:Harlequin Shrimp (Hymenocera elegans ) *
Saturday, December 24, 2011 6:42 PM
( permalink)
Awesome - cool Christmas surprise 
|
|
|
Re:Harlequin Shrimp (Hymenocera elegans ) *
Wednesday, December 28, 2011 10:21 PM
( permalink)
I was catching my clown fry tonight. I noticed something odd floating with them. I found my pair. My female had her tail tucked under her and was fanning a ton. I snagged a video. I don't think it's in good focus, but it's the best I could do under a blue light. I have tons of Harlequin larvae!!!!!! I got both the parents in the shot too. I'm so excited!!!!
RLTW 180 Gallon Mixed Reef Then I heard the voice of the Lord saying, "Whom shall I send? And who will go for us?" And I said, "Here am I. Send me!" Isaiah 6:8
|
|
|
Re:Harlequin Shrimp (Hymenocera elegans ) *
Thursday, December 29, 2011 4:29 AM
( permalink)
That is so great Happy for you...can't wait to read the next post
|
|
|
Re:Harlequin Shrimp (Hymenocera elegans ) *
Thursday, December 29, 2011 7:53 AM
( permalink)
RLTW 180 Gallon Mixed Reef Then I heard the voice of the Lord saying, "Whom shall I send? And who will go for us?" And I said, "Here am I. Send me!" Isaiah 6:8
|
|
|
|