Daisys Blue Ricefish (Oryzias woworae)
The Daisy's Blue Ricefish are a very peaceful, active schooling fish that are perfect for the nano or planted aquarium. However, due to their small size, these fish are not recommended for the general community aquarium.
The Daisy's Blue Ricefish must be kept in schools of 6 or more individuals. The reason for this being not only will they display their best natural behaviour and colouration in large schools, but they will also pay little to no attention to other species.
If you would like to house these with other fish, small species such as Microdevario, Sundadanio, Trigonostigma, Pygmy Corydoras and small Catfish such as Otocinclus would be the best choices. These Ricefish will also do fine with Dwarf Shrimp. However, if you intend on breeding your Ricefish, then you should ideally maintain them alone.
These Ricefish are very hardy and adaptable; however, they do require clean, well-maintained water to thrive. These fish will also exhibit their best colours in a well-planted aquarium with a dark substrate, especially where floating plants are present. As long as these fish have plenty of coverage, they are a highly outgoing species.
Male Daisy's Blue Ricefish have a steel blue body bordered with bright red stripes on the ventral surface of the head and body as well as on the pectoral fins, the caudal peduncle, and on the dorsal and ventral portions of the caudal fin. The females also have these reddish outlines; however, they have a yellow body colour instead.
|Scientific Name||Oryzias woworae|
|Aquarium Level||Middle - Top|
|Difficulty||Beginner - Intermediate|
|Best kept as||Groups 6+|
|Lifespan||3 - 4 years|
|Temperature||73 - 80 ℉ (22.8 - 26.7 ℃)|
|PH||6.0 - 7.5|
|GH||9 - 19|
|TDS||90 - 268|
Natural Habitat of the Daisys Blue Ricefish
The Daisy's Blue Ricefish is only known from a single location, a stream called Mata air Fotuno, in the Parigi district on the island of Muna in South East Sulawesi province in Indonesia in Southeast Asia. They inhabit slow-moving freshwater streams as well as some associated still ponds opposite springs under reasonably dense forest cover. The substrate in their habitat consists of sand and mud with small areas of leaf litter.
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What to feed the Daisys Blue Ricefish
Daisy's Blue Ricefish are unfussy in the aquarium and will thrive and remain very colour when on a varied diet. You should provide these fish with high quality dried foods such as flakes, granules and pellets alongside small live, frozen or freeze-dried foods like microworms, tubifex, brine shrimp and finely chopped bloodworms. You will also need to give your Ricefish some vegetable matter in their diet occasionally.
How to Sex the Daisys Blue Ricefish
It is very straightforward to distinguish the male from the female Daisy's Blue Ricefish. Mature males are slimmer, far more colourful and have longer anal and dorsal fins, whereas females are more plumper with plainer body colour.
How to Breed the Daisys Blue Ricefish
Daisy's Blue Ricefish are relatively easy to breed and pretty prolific, as females can produce 10 to 20 eggs every few days. They usually spawn in the early hours of the morning.
When these fish are ready to breed, the body colour of the males become darker, and they will start to defend small territories against other males whilst trying to entice females there. The adhesive eggs are discharged as a single mass and fertilised simultaneously by the male.
The eggs remain on the genital pore of the female for a short time before being deposited amongst aquatic plants. So a few clumps of fine-leaved aquarium plants such as java moss will need to be added to the breeding tank. Spawning mops also work very well.
The eggs will usually hatch anywhere between one and three weeks, depending on the water temperature. Adult fish typically ignore the eggs; however, they will consume babies that are swimming around. Therefore it would be better if you placed the eggs in a separate aquarium. When putting juveniles of different ages together, the larger fry can predate on the smaller ones if there is a more significant enough size difference, so caution needs to be taken.
Once the fry becomes free-swimming, it would be better to feed them with tiny live foods such as microworm and baby brine shrimp.