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Breeding Journal, Species: Elacatinus Oceanops
Friday, August 20, 2010 6:26 AM
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Breeding Journal DataSheet
This first post should be updated regularly to include new information as events take place or changes are made to your system General Species: Elacatinus oceanops Social Structure: pair, other gobies present and not interferring Size of Individuals: 1.5 inches long Age of Individuals: unknown Date added to Tank: 10/10/2009 Broodstock Tank Details Size of Tank: 8 gallons, quarantine tank Substrate Details: bare, with 3/4 inch diameter PVC pipe piece Filtration Details: overflow to bioball trickle, submerged foam pond filter, preinnoculated Water Changes: 10% every 2 weeks Water Temperature: 80 Lighting: ambient Lighting Cycle: 14/10 Other Tank Inhabitants: 3 other E. oceanops Broodstock Feeding Details Food Types: PE mysis, occasional bloodworms, enriched frozen brine shrimp, New spectrum small pellets. Feeding Schedule: twice daily . Broodstock will eat chunks that are bigger than their heads! Spawning Details Date of First Spawn: 11/19/2009 Spawn Time of Day: morning Dates of Consecutive Spawns: 11/28/2009, ...2/4/2010 first successfully raised Courtship Details:Spawned inside a 3/4 diameter, 1.5 inch PVC pipe. Didn't look like a lot of eggs. Clear in color, eggs developed black eyes a couple of days before hatching. Male guarded and fanned the eggs. Later nests were larger and densely packed. Never witnessed a spawn. They happened between the evening feeding and the morning feeding. Egg Size: tiny Egg Color: transparent off white Egg Count: hundred or so Hatch Details Hatch Date: 11/25/2009,...,2/10/2010 first successfully raised Hatch Time of Day: morning # Days after Spawn: 6 Larvae Description: Second spawn: The gobies laid a really big nest. It was densely packed and covered an area about the size of a US quarter. The eggs are really small, so that's a lot of eggs. I tried the shaking method, and man was that fun! You shine a light on the eggs underwater, and the little swimmers just keep popping up. Unlike clownfish eggs, you can watch these guys hatch! Larvae dart around. Neon Gobies larvae have 3 bright spots when viewed from above; the eye, swim bladder and something on the caudal peduncle reflect light. Larval Tank Details Temperature: 80 Size of Larval Tank: First attempt was a fishbowl kreisel submerged in a larger tank. There were many failed attempts. What worked for me was a black round tank 17 gallons, filled to 5 , sterilized with bleach and dechlorinated before larval addition, with a well screened central standpipe, draining to a bucket, sponge filter, small powerhead and UV. Substrate Details: bare Other Tank Decor: black Filtration Details: a well screened central standpipe, sponge filter, and UV. Larvae are kept in a still tub with an airstone for a few days. After about a week, a slow circulation was started through the sump (bucket) using a choked-back powerhead in the bucket sump. Lighting: 15 watt CFL 12 inches from water, under-cabinet light at night for the first few days Lighting Cycle: 14/10 Water Changes: Water additions by drip only to fill the tank slooooowly to the overflow over many days. Top off to the bucket sump. Water changes were minimal and to the sump, so the larvae only experienced slow changes in water quality. It seems important not to do large water changes, as that coincided with larval death in the early attempts at raising these fish. Larval Feeding Details Food Types: rotifers, rotifer diet. I start feeding nhbs at about a week and a half. I also sprinkle in just enough Otohime A to give them a taste, but I am never sure they are eating it. I also have them on a trickle recirculation and I filter the overflow through a plankton filter to capture the rotifers that go down the overflow. I really don't want rots in the UV filter. After a few weeks when I can see them eating the Oto, I stop the brine shrimp. Feeding Schedule: continuos until Oto, then 4 x per day via auto feeder. Metamorphosis/Settlement Date of Settlement Start: 3/10/2010 Days after Hatch: 30 Date of Settlement End: 3/14/2010 Description of Fry: black with neon blue stripes on both sides , larvae will stick to the sides of the tank frequently around time for metamorphosis.
Grow-Out Tank Details Temperature: 80 Size of Grow-Out Tank: 10 gallons Substrate Details: none Other Tank Decor: 3/4 sections of PVC pipe, hundreds of baby clownfish Filtration Details: 100um filter bag, Bioballs, heater, broken UV Lighting: ambient Lighting Cycle: 14/10 Water Changes: 10% whenever Size at Transfer: at least 1 inch Age at Transfer: 6-8 weeks Grow-Out Feeding Details Food Types: Otohime pellets Feeding Schedule: 4 times daily from auto-feeder. Additional Information Miscellaneous Information: You will be required to provide photographic evidence in this thread of each event submitted for the MBI Program.
If your thread does not contain these photos the MBI Committee will not be able to approve your reports.
<message edited by KathyL on Monday, November 14, 2011 6:32 PM>
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Re:Breeding Journal, Species: <Elacatinus Oceanops>
Saturday, August 21, 2010 1:13 PM
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These are larval neon gobies. 
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Re:Breeding Journal, Species: <Elacatinus Oceanops>
Saturday, August 21, 2010 1:15 PM
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more pix of larvae 
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Re:Breeding Journal, Species: <Elacatinus Oceanops>
Saturday, August 21, 2010 1:19 PM
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after meta:  
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Re:Breeding Journal, Species: <Elacatinus Oceanops>
Saturday, August 21, 2010 2:05 PM
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Nice pics Kathy! 
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Re:Breeding Journal, Species: <Elacatinus Oceanops>
Saturday, August 21, 2010 3:10 PM
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Click on the picture to see the video. Seconds after hatching, these are E. oceanops larvae, a.k.a. neon gobies. The nest is in the pipe on the left, held against the center standpipe of a black round tub with a rubberband. The source of all the tiny bubbles is a flexible air diffuser wrapped around the standpipe at the base. There is also a slow stream of filtered water coming in from the left of the tub. Present in the tub are some 2 week old neon gobie larvae, but they are outnumbered by the new ones. Also present are a LOT of rotifers and phytoplankton, hence the green water. These new larvae will eat phytoplankton stuffed rotifers constantly, and take 4 weeks to undergo metamorphosis and finally become tiny fishes. 
<message edited by KathyL on Sunday, August 22, 2010 6:17 AM>
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Re:Breeding Journal, Species: <Elacatinus Oceanops>
Sunday, August 22, 2010 6:22 AM
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Seems I forgot the best vido Click on the picture to see the video. 
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Re:Breeding Journal, Species: <Elacatinus Oceanops>
Sunday, August 22, 2010 7:22 AM
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Re:Breeding Journal, Species: <Elacatinus Oceanops>
Sunday, August 22, 2010 8:45 PM
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These guys are from my first successful raising, and are 5 months post meta. The central one could be gravid: I am hoping... 
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Re:Breeding Journal, Species: <Elacatinus Oceanops>
Sunday, August 22, 2010 8:56 PM
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They look GREAT Kathy!
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Re:Breeding Journal, Species: <Elacatinus Oceanops>
Sunday, August 22, 2010 10:21 PM
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Gravid at five months post meta....wow, they are fast 
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Re:Breeding Journal, Species: <Elacatinus Oceanops>
Thursday, September 23, 2010 1:04 PM
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Hey Kathy I just noticed that we never made a fishy for the E. oceanops  So I added one to the system today. Got your first fishy now!
Chad Penney - MBI Council Agis quod Adis
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Re:Breeding Journal, Species: <Elacatinus Oceanops>
Sunday, April 10, 2011 10:30 AM
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Are you still breeding these? I'm in your area and wouldn't mind getting a few to start up with.
Thanks
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Re:Breeding Journal, Species: <Elacatinus Oceanops>
Wednesday, July 6, 2011 9:29 AM
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Sorry, I did not see this until now. I don't have any for sale at the moment. I am trying to get the next batch to breed. Contact me in 6 months.
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Re:Breeding Journal, Species: <Elacatinus Oceanops>
Sunday, September 11, 2011 8:14 PM
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I have no breeders from the fish I raised this first time. Just back from MACNA, where I learned that I should try lowering the temperature down to 72 for these guys. It seems they only spawn in the early spring in the carribean. Unfortunately, my basement is 78 right now, ambient. I may have to wait until the weather gets colder. I have 5 captive bred from ORA, in a 10 gallon tank. All getting along well.
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Re:Breeding Journal, Species: <Elacatinus Oceanops>
Monday, September 12, 2011 7:26 AM
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That's crazy. Every time I've tried they've bullied and chased each other right out of the tank until I have one left. Maybe I was unlucky and only got males.
--Andy, the bucket man. "Not to know the mandolin is to argue oneself unknown...." --Clara Lanza, 1886
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Re:Breeding Journal, Species: <Elacatinus Oceanops>
Monday, September 12, 2011 5:25 PM
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 Originally Posted by KathyL
I have no breeders from the fish I raised this first time. Just back from MACNA, where I learned that I should try lowering the temperature down to 72 for these guys. It seems they only spawn in the early spring in the carribean. Unfortunately, my basement is 78 right now, ambient. I may have to wait until the weather gets colder. I have 5 captive bred from ORA, in a 10 gallon tank. All getting along well.
I didnt know that! Is it the same for Red Heads? Spawning in the spring I mean? If it is my female obviously didn't know she spawned continuously for 4 months at 78-80. Go figure.....
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Re:Breeding Journal, Species: <Elacatinus Oceanops>
Monday, September 12, 2011 5:29 PM
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Just checked my spawn report. The redheads first spawned in Feb with a water temp of 24-25. Weather here was just warming up, so maybe it's the temp rise that starts the ball rollin, but in her case it didn't stop.
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Re:Breeding Journal, Species: <Elacatinus Oceanops>
Monday, September 12, 2011 5:36 PM
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I don't know. I'm going to try it as soon as I can, weather willing.
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Re:Breeding Journal, Species: <Elacatinus Oceanops>
Monday, September 12, 2011 5:39 PM
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You would presume these fish would be vey similar in their habits though, being so closely related. I also have a pair of Oceanops introduced and paired up recently. I keep my tanks at 78-80, so will keep you informed if anything happens. One is already fatter than the other 
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