Breeding Journal, Species: Opistognathus rosenblatti (bluespot jawfish)

General
Species:  Opistognathus rosenblatti (bluespot jawfish)
Social Structure:  male/female pair
Size of Individuals:  3-3.5"
Age of Individuals:  unsure
Date added to Tank:  April 2011 

Broodstock Tank Details
Size of Tank:  40 gallon breeder
Substrate Details:  deep sand bed
Filtration Details:  flow through w/sump (skimmer, UV, micron sock)
Water Changes:  weekly 10-15%
Water Temperature:  78-82
Lighting:  single MH
Lighting Cycle: 15 hrs on/ 9 hrs off 
Other Tank Inhabitants:  clownfish

Broodstock Feeding Details
Food Types:  thawed homemade mush, mysis, pellets
Feeding Schedule:  3-5 times per day

Spawning Details
Date of First Spawn:  6-25-2011
Spawn Time of Day:  unsure
Dates of Consecutive Spawns: 
Courtship Details:  Male turns white and darts in and out of his cave; female watches from her cave
Egg Size:  1mm?
Egg Color:  orange
Egg Count:  several hundred

Hatch Details
Hatch Date: 
Hatch Time of Day: 
# Days after Spawn: 
Larvae Description: 


Larval Tank Details
Temperature: 
Size of Larval Tank: 
Substrate Details: 
Other Tank Decor: 
Filtration Details: 
Lighting: 
Lighting Cycle: 
Water Changes: 

Larval Feeding Details
Food Types: 
Feeding Schedule: 

Metamorphosis/Settlement
Date of Settlement Start: 
Days after Hatch: 
Date of Settlement End: 
Description of Fry: 

Grow-Out Tank Details
Temperature: 
Size of Grow-Out Tank: 
Substrate Details: 
Other Tank Decor: 
Filtration Details: 
Lighting: 
Lighting Cycle: 
Water Changes: 
Size at Transfer: 
Age at Transfer: 

Grow-Out Feeding Details
Food Types: 
Feeding Schedule: 

Additional Information

(No Pictures or Videos in the Section Please)
Miscellaneous Information: 



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Doni Marie~

Male flashing in his 'white tuxedo'
 

 
 
Female watching nearby

Doni Marie~

Lovin' it Doni!
 

Egg mass found on sand bed.
I disposed of the egg mass but wish I had put them in a tumbler and at least tried to hatch them....
However, I feel confident that they will spawn again soon
 

 

Doni Marie~

Awesome Doni.  So, how did you determine male from female; and how did you get them paired up?

Rook

Fantastic! I've seen the spawning display but have never had eggs (and lost the female soon after).

--Andy, the bucket man.
"Not to know the mandolin is to argue oneself unknown...." --Clara Lanza, 1886

Anymore spawns with them?

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

Awesome Doni! 

Proud member of the first dedicated breeders site in the UK
Marine Fish Breeders Club - UK
H.Zosterae - 60 DPS

Bringing this to the top. Looking for any additional info. Thank you.
 
Any aggression noted towards the clowns?

Any update on these guys? How long after you noticed flashing did they spawn? My male has started flashing but the female seems to ignore him so far.