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Breeding Journal, Species: Cryptocentrus cinctus (Yellow Watchman Goby)
Tuesday, February 16, 2016 10:44 AM
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Breeding Journal DataSheet  General Species: Cryptocentrus cinctus (Yellow Watchman Goby) Social Structure: Bonded/breeding pair Size of Individuals: Male (2.25"), Female (2") Age of Individuals: 1-2 years Date added to Tank: November 2015 Broodstock Tank Details Size of Tank: 36” x 36” x 8” (shallow reef) Substrate Details: Caribsea Fiji Pink sand Filtration Details: No mechanical or chemical filtration just biological filtration (macro-algae,etc) Water Changes: 40% once a month Water Temperature: 79.5-80F Lighting: One (1) Kessil A360 Lighting Cycle: 11 hrs on, 13 hrs off (ambient window lighting in morning and evening for two hours each) Other Tank Inhabitants: Amblyeleotris wheeleri (bonded pair), Pterapogon kauderni (breeding pair), Gobiosoma oceanops (bonded pair) Broodstock Feeding Details Food Types: Mysid Shrimp (frozen), New Life Spectrum Marine - 1mm Sinking Pellet Feeding Schedule: Twice daily (once around 12 pm, once around 5 pm) Spawning Details Date of First Spawn: November 24, 2015 Spawn Time of Day: Night Dates of Consecutive Spawns: Spawn#1 November 24, 2015, Spawn #2 January 19 2016, Spawn#3 February 11, 2016, Spawn#4 March 1, 2016 Courtship Details: They spend most of the day separate from one another but they do feed together. They sleep together in the same cave every night. No courtship ritual recognized other than that they spend more and more time together as the female becomes gravid. Egg Size: 1 mm Egg Color: Day 1 (yellow), Day 5 (dark with silver eyes) Egg Count: 10,000+ Hatch Details Hatch Date: 2/16/2016 Hatch Time of Day: 9 pm = Lights Off (Hatching began almost immediately once lights turned off) # Days after Spawn: Five (5), The night of the fifth day Larvae Description: Transparent, >=1mm Consecutive Hatch Dates: All three spawns hatched at night of the fifth day mark at 79.5-80F Larval Tank Details Temperature: 79.5-80F Size of Larval Tank: 1 gallon Betta Condo (Kreisel) Substrate Details: None Other Tank Decor: None Filtration Details: None Lighting: Kessil A360 (using ambient lighting from main display) Lighting Cycle: 11 hrs on, 13 hours off Water Changes: 20-25% daily Larval Feeding Details Food Types: Parvocalanus crassirostris nauplii Feeding Schedule: The larval tank has a healthy copepod population. I am adding 5-10 ml of Isocrysis daily. Both adult and nauplii are plentiful in kriesel. I add just enough microalgae to sustain the copepods. Less is more. Metamorphosis/Settlement Date of Settlement Start: TBT Days after Hatch: TBT Date of Settlement End: TBT Description of Fry: TBT Grow-Out Tank Details Temperature: TBT Size of Grow-Out Tank: TBT Substrate Details: TBT Other Tank Decor: TBT Filtration Details: TBT Lighting: Ambient Lighting Cycle: TBT Water Changes: TBT Size at Transfer: TBT Age at Transfer: TBT Grow-Out Feeding Details Food Types: TBT Feeding Schedule: TBT Additional Information Miscellaneous Information:
<message edited by tannersmith2000 on Tuesday, March 22, 2016 7:53 PM>
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Re:Breeding Journal, Species: Cryptocentrus cinctus (Yellow Watchman Goby)
Tuesday, February 16, 2016 11:12 AM
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Hey guys. This is my first journal. I have a pair of yellow watchman gobies that are on their 3rd spawn. I have decided to try to rear these fish to adulthood. The first two spawns were just for observation and I also wanted them to practice and to feel comfortable spawning in my tank. Today is day 6 and I expect the hatch to happen tonight. I am going to transfer the egg cluster to a larval rearing tank just before the lights go out. I am somewhat optimistic about rearing the fish successfully because I have my Isocrysis galbana and parvocalanus crassirostris cultures going strong. I just hope I am able to supply enough nauplii to the larvae. I may or may not use the whole egg mass for this first trial run. I will update this thread consistently with pictures and videos. I plan on taking some shots of the larvae just before hatch.
<message edited by tannersmith2000 on Tuesday, February 16, 2016 11:46 AM>
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Re:Breeding Journal, Species: Cryptocentrus cinctus (Yellow Watchman Goby)
Tuesday, February 16, 2016 11:20 AM
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Re:Breeding Journal, Species: Cryptocentrus cinctus (Yellow Watchman Goby)
Tuesday, February 16, 2016 11:30 AM
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This is a video of the larvae developing in the egg. I assume they are 4 days old. I did not recognize exact spawn day. November 25, 2015 - Larvae Development Spawn #1 Day 4 (approx estimation) https://www.youtube.com/watch?v=nqDXeHopi-Y
<message edited by tannersmith2000 on Tuesday, February 16, 2016 3:34 PM>
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Re:Breeding Journal, Species: Cryptocentrus cinctus (Yellow Watchman Goby)
Tuesday, February 16, 2016 3:33 PM
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Sex determination and pairing: This may be obvious to someone more experienced, but I am not 100% certain which gender each fish possesses. Initially I purchased two gobies that were 1" in length and they fought almost to the death. I separated both fish and placed them in different tanks. Both fish were separated and were very bright yellow in coloration. About two months passed and I noticed a white colored yellow watchman goby at my LFS. This fish was small approx 1". I bought it and hoped that one of my two assumed males (since they fought) would pair up with what I was hoping to be a female. In no time this new white fish paired up with one of my yellow males. They have been together ever since. Still yet I am not 100% sure which is which. The fish that constantly fans the eggs is what I assume to be a male. He changed from bright yellow to pale brown in color. The white female changed from white to bright yellow. The only reason I say that the fish fanning the eggs 100% of the time is male is based on two observations: 1) I never see it appear gravid unless it recently ate. The assumed female appears gravid right before spawning. NOTE: I have never noticed her caring for the eggs. 2) It fought almost to the death with the other fish I initially paired it with. The aggressive nature made me assume this fish to be a male. These fish change colors and it's interesting in that of itself. A pair appears to form almost immediately if paired with opposite sex. Here is a picture of the pair: The Male is approx. 0.5" larger than the Female. Here is a picture of the males in battle: One of these guys is now the caretaker of the nest. Here is a video of their battle when they were first introduced: https://www.youtube.com/watch?v=mAMSfnUuQbc
<message edited by tannersmith2000 on Sunday, February 21, 2016 8:32 PM>
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Re:Breeding Journal, Species: Cryptocentrus cinctus (Yellow Watchman Goby)
Wednesday, February 17, 2016 8:49 AM
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Egg Transfer: I transferred the egg cluster to the kreisel about 15 mins before lights turned off. The kreisel was placed in the tank where the goby pair resides. This was to make temperature consistent with their incubation temperature. Plus I didn't want a heater in the kreisel. This works perfectly. All I added was bubbles via an air pump. The eggs hatched almost instantly after lights turned off. Here is a picture of a small piece of the egg cluster 10 minutes before lights turned off Video link of this egg cluster can be found below https://www.youtube.com/watch?v=wH80QDqxZZk There are thousands of larva in the water column. I have way too many to feed. I plan on siphoning any deceased larvae and any weak larvae in a couple hours. Their yolk sacs were almost fully consumed prior to hatching. Here's some pictures of my kreisel setup and a video of the hatch. Hatching Video This is 10 mins after lights turned off (9 pm) https://www.youtube.com/watch?v=vE7srNpvxv0
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Re:Breeding Journal, Species: Cryptocentrus cinctus (Yellow Watchman Goby)
Wednesday, February 17, 2016 8:53 AM
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Re:Breeding Journal, Species: Cryptocentrus cinctus (Yellow Watchman Goby)
Wednesday, February 17, 2016 11:50 AM
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UPDATE: Day 1 Post Hatch - Trial #1 I estimate between 60-70% of the larvae are alive and doing well. They are swimming around and flowing in a circular pattern ever so slowly. This betta tank (kreisel) is doing a wonderful job of keeping them in suspension. I am feeding them parvocalanus crassorisitis nauplii and adults. I siphoned any debris and deceased larave from the bottom of the kreisel and topped off the tank with fresh saltwater. I am probably feeding 5 - 10 food items per ml (which is not enough) I have 50K parvocalanus crassirostris nauplii coming tomorrow. I hope the strong can survive until then. Temp 80F 35 ppt
<message edited by tannersmith2000 on Tuesday, March 01, 2016 9:13 AM>
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Re:Breeding Journal, Species: Cryptocentrus cinctus (Yellow Watchman Goby)
Wednesday, February 17, 2016 2:07 PM
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Can you elaborate on what your using for the "Kreisel". For example what betta tank, How you have the air setup? Are you using a pump? Is it connected to the tank and using the same water or it is its own water and just using the tank for temp control? You got some really cool pics and videos! Awsome
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Re:Breeding Journal, Species: Cryptocentrus cinctus (Yellow Watchman Goby)
Wednesday, February 17, 2016 3:16 PM
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 Originally Posted by road8514
Can you elaborate on what your using for the "Kreisel". For example what betta tank, How you have the air setup? Are you using a pump? Is it connected to the tank and using the same water or it is its own water and just using the tank for temp control? You got some really cool pics and videos! Awsome Here's a pic of it in my tank Here's a link to them online: Betta Condo - 1 Gallon. They are just $10 a piece. The "Kreisel" has clear sides for viewing. It is totally sealed and none of my tank water flows in or out of the kreisel. I placed this tank in my display tank in order to keep temperature consistent and I did not want to have to use a heater. All I did was place a piece of rigid airline tubing into the kreisel and let the bubbles tumble against the red curved area. The bubbles rotate the water clockwise. It keeps the fish in suspension nicely. I did not use tank water. I made new saltwater and matched the parameters the best I could. So far so good.
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Re:Breeding Journal, Species: Cryptocentrus cinctus (Yellow Watchman Goby)
Wednesday, February 17, 2016 11:03 PM
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That is a nice set up! I think I might just have to get a condo also  great videos, cant wait to see those little ones grown up.
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Re:Breeding Journal, Species: Cryptocentrus cinctus (Yellow Watchman Goby)
Thursday, February 18, 2016 12:45 AM
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Amazing videos!
Owner of Kathy's Clowns, LLC Yes, we have no more clownfish. We have no more clownfish today!
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Re:Breeding Journal, Species: Cryptocentrus cinctus (Yellow Watchman Goby)
Thursday, February 18, 2016 4:09 PM
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UPDATE: Day 2 Post Hatch - Trial #1 I have thousands still alive darting around and hopefully eating. I can hardly tell that I have lost many. The deceased are visible floating or resting on the bottom. Today I fed them probably 20ml of a fairly dense population of nauplii. I am planning to do daily 25% water changes. I am going to start my water changes this evening. I am using air line tube and air line hose to siphon any debris and deceased larvae. My biggest concern is ammonia spike. I am hoping daily 25% water changes is sufficient. I am not using any water conditioners such as AmQuel. If you all have advice, please share it. Video: https://www.youtube.com/watch?v=6IhMk7IzVpU Temp 79.5F 35 ppt
<message edited by tannersmith2000 on Tuesday, March 01, 2016 9:14 AM>
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Re:Breeding Journal, Species: Cryptocentrus cinctus (Yellow Watchman Goby)
Thursday, February 18, 2016 11:31 PM
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Nice job on the set up. Great videos! Good luck!
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Re:Breeding Journal, Species: Cryptocentrus cinctus (Yellow Watchman Goby)
Friday, February 19, 2016 1:15 PM
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UPDATE: Day 3 Post Hatch - Trial #1 There has been a significant die off between 3 DPH and 2 DPH. Nonetheless I still have hundreds if not thousands still alive and darting around. I vacuumed all debris and deceased and performed a 25% water change. I added 10ml of Isocrysis and 20ml of nauplii. I can see many adult copepods darting around in the water column. I have a nice plankton soup going at the moment. I am hoping the adult pods are spawning their little hearts out with eggs and nauplii. At 3 DPH I am happy with as many larvae as I have alive at the moment. Pictures and video below: Video: https://www.youtube.com/watch?v=__aIBoGYp8E
<message edited by tannersmith2000 on Tuesday, March 01, 2016 9:14 AM>
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Re:Breeding Journal, Species: Cryptocentrus cinctus (Yellow Watchman Goby)
Friday, February 19, 2016 4:01 PM
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How did you get the larvae to hold still that long under the microscope? Mine green banded larvae bounce all over the place I am lucky to see them through the scope.
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Re:Breeding Journal, Species: Cryptocentrus cinctus (Yellow Watchman Goby)
Friday, February 19, 2016 4:07 PM
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 Originally Posted by road8514
How did you get the larvae to hold still that long under the microscope? Mine green banded larvae bounce all over the place I am lucky to see them through the scope. Pure luck I guess lol
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Re:Breeding Journal, Species: Cryptocentrus cinctus (Yellow Watchman Goby)
Saturday, February 20, 2016 5:57 PM
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Re:Breeding Journal, Species: Cryptocentrus cinctus (Yellow Watchman Goby)
Sunday, February 21, 2016 3:26 PM
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Re:Breeding Journal, Species: Cryptocentrus cinctus (Yellow Watchman Goby)
Monday, February 22, 2016 4:07 PM
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