Date post: | 02-Jan-2016 |
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If threat on natural habitat, can Yazoo Darters be successfully bred and reared in captivity?
Develop/refine culture and rearing techniques
◦ Determine spawning cues for species
Water temp, photoperiod, substrate composition and possibly current
◦ Develop feeding regime
Our objective
Collected March 2012◦ 3 male 7 female
Fish were kept in 3 tanks (115 L) 1 male and 2 female per tank.
Maintain on a recirc. sys. @ 65°F until Aug. ◦ Constant light to inhibit spawning◦ Males lost coloration
Collection and Rearing
• Temperature controlled room
•Six 115 L and Fifteen 64 L tanks
•UV and Bio filters
•568 L sump
On 8/3/2012 spawning substrate (sand, gravel, boulder, woody debris) was added to one tank.
Temp was increased by 2°F every 2 weeks to 69°F (Johnston and Haag 2006)
Photoperiod was manually controlled to simulated natural conditions
Spawning trials (in aquaria)
Current temperatures are 73°F
No spawning behavior has been observed
Males are beginning to show return of color
Plans to construct automatic lighting
No spawning thus far