Fish - Carp - Oryzias Woworae
- Common Name: Neon Blue Daisy’s Rice Fish, Daisy’s Blue Killifish
- Origin: Sulawesi – Indonesia
- Diet: Fine ground flake food; Frozen: baby brine shrimp, daphnia
- Size: Males 1 inch, Females 1 inch.
- Water Conditions: pH 6.0 to 7.5
- Water temperature: 74 to 80 degrees F.
- Introduced: Parenti & Hadiaty – 2010; named for Daisy Wowor from Java, Indonesia who collected and photographed the first fish
- Sexing: Adult males have more color, will have longer dorsal and anal fins and a slimmer body shape.
- Breeding: Females may produce batches of 20 to 30 eggs every few days. Spawning will occur in early morning and eggs will be deposited in the fine leaves of plants such as Cabomba. Parents should be removed and eggs will hatch in one to three weeks; depending on temperature. Fry will eat Paramecium or other microscopic food. After one week baby brine shrimp may be fed. Fry will eat smaller siblings as they grow.
- Behavior: Daisy’s Blue Rice fish are a very peaceful, small community fish. It is best to keep them in a heavily planted tank with other fish such as Threadfin or furcata rainbows, honey gouramis, neon tetras or celestial (galaxy) rasboras. Small corydoras or otocinclus may also be used. Several females should be present for the males to show optimum color.
Oryzias woworae is distinguished from all other ricefishes by an autapomorphic color pattern of both sexes in life: the ventral surface of head and body anterior to pelvic fins, dorsal portion of pectoral fins, dorsal-fin base, posterior portion of anal-fin base, caudal peduncle, and dorsal and ventral portions of caudal fin are brilliant red; the midlateral scales from just posterior to the eye to the caudal-fin base and the body scales anterior to the anal fin and below midlateral scales are steel blue. The operculum and base of the pectoral fin are silvery. Oryzias woworae has a truncate, rather than lunate or emarginate, caudal fin that distinguishes it from the large, pelagic Sulawesi ricefish in the genus Adrianichthys and five species of Oryzias: O. bonneorum, O. nebulosus, O. nigrimas, O. orthognathus, and O. sarasinorum. Oryzias woworae is readily distinguished from other Oryzias with a truncate caudal fin by an hour-glass shaped, rather than rounded, ossified portion of the mesethmoid with no cartilage on its midlateral margins, like the ethmoid of some of the larger, pelagic Sulawesi ricefishes
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