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: Elysia diomedea Social Structure: Pair (hermaphroditic)
Size of Individuals: ~1.5"
Age of Individuals: Unknown
Date added to Tank: 1/15/13
Broodstock Tank Details Size of Tank: 29g
Substrate Details: Crushed Coral
Filtration Details: Modified wet/dry Biocube + Fuval G3 Canister
Water Changes: Once a week
Water Temperature: 78.5ºF
Lighting: Custom LED
Lighting Cycle: 10 hrs
Other Tank Inhabitants: x2
Amphiprion ocellaris, x1
Salarias fasciatus, x1
Lysmata debelius, x1
Alpheus rubromaculatus, x1 Davidaster sp. Broodstock Feeding Details Food Types: Bryopsis and possibly some hair algae
Feeding Schedule: Constant
Spawning Details Date of First Spawn: 3/10/13
Spawn Time of Day: Afternoon
Dates of Consecutive Spawns: 3/13/13
Courtship Details: Seen in a "ball" right up against each other before second egg ribbon appeared right where they were together
Egg Size: ~.5 mm
Egg Color: White
Egg Count: Thousands? (Two ribbons)
Hatch Details Hatch Date: 3/13/13
Hatch Time of Day: morning
# Days after Spawn: 3
Larvae Description: super tiny, ~100um (?), free swimming, transparent/translucent
Larval Tank Details Temperature: ~78ºF
Size of Larval Tank: ~0.125g ( in-tank breeder box)
Substrate Details: No Substrate
Other Tank Decor: Small rock with bryopsis attached
Filtration Details: None
Lighting: 10 hrs
Lighting Cycle: 1 per day
Water Changes: none so far
Larval Feeding Details Food Types: Attempted ground up bryopsis with mortar and pestle.
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 Miscellaneous Information: Since it seems this species of nudibranch has a planktonic larval stage, I have isolated the eggs in a small in-tank breeder box with an air line lightly bubbling so the water moves very gently. Matt Pederson attempted to feed different types of phytoplankton with no success and although I do have phyto on hand, for my first attempt (if the eggs hatch) I will grind some bryopsis with a mortar and pestle to create a soup for the larvae. I may also grind up some hair algae but I know the adults eat bryopsis so that is my first thought. I also have read that some nudibranch larva will eat something different than the adults.
Resources-
Seaslugforum:
http://www.seaslugforum.net/find/elysdiom Matt Pederson's Journal:
http://www.masm.org/mForums/tm.aspx?m=35852
<message edited by Bongo Shrimp on Thursday, March 14, 2013 9:11 PM>