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Kitatsuji Hire-Long Medaka

Kitatsuji Hire-Long Medaka is an elegant medaka whose dorsal and anal fins extend long toward the front and rear of the body. Males have no notch in the dorsal fin, and the tail base (caudal peduncle) is large. It was certified as new variety No. 36 by the Japan Medaka Association and became the starting point of the wide-fin trait. It is a small medaka, and the variety is rated beginner-friendly. Like other medaka, it is mild-mannered and looks lovely swimming in a group, which makes it a good choice for a first fancy medaka.

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Kitatsuji Hire-Long Medaka key facts

Care level
Beginner-friendly
Lifespan
Few reliable data
Size
About 3-4 cm (wild medaka reach up to 4 cm SL: FishBase)
Diet
Omnivore (floating prepared foods, live foods such as daphnia)
Container & Tank
The fin shape is best seen from the side in a glass tank.
Breeding
Fixation is said to be about 100%; choose breeders with unnotched dorsal fins and thick caudal peduncles.
Tank Mates & Compatibility
Peaceful and fine with other medaka of similar size. To keep the variety's traits, do not let it breed with other varieties in the same container.
Diet & Feeding
Give floating food that is eaten within 3-5 minutes: at least twice a day in summer, once a day in spring and autumn, and little or none outdoors in winter.
Cautions
Never release ornamental medaka into rivers, ponds or paddies; hybridisation causes genetic pollution of wild medaka.
TraitsMedakaWide finJMA-certified varietyFins

About Kitatsuji Hire-Long Medaka

Kitatsuji Hire-Long Medaka has long dorsal and anal fins that extend along the body. Certified as Japan Medaka Association new variety No. 36, it became the starting point of the wide-fin trait. Small and beginner-friendly.

7 things to know before welcoming a Kitatsuji Hire-Long Medaka

  1. 1Long, Flowing Fins

    The dorsal and anal fins extend long toward the front and rear of the body, and males have no notch in the dorsal fin. The large tail base is another point that helps identify the variety. Choosing an individual with well-formed fins lets you enjoy the look this variety is known for.

  2. 2Beginner-Friendly

    Its care difficulty is rated beginner-friendly, so it is easy to consider as a first fancy medaka. As a small medaka it is compact, which makes it easier to plan where to keep the container. It also helps to get into the habit of checking how each fish eats and swims every day.

  3. 3Lifespan Data Is Limited

    Reliable sources on lifespan are limited, so we cannot give a definite figure. Rather than counting on a number, watch each fish's appetite, swimming, and fin condition. Asking the breeder about the parent line and how the fish were raised can also be a useful reference.

  4. 4Keep Water Flow Gentle

    Long-finned varieties can tire out in strong currents. Turn down the filter outflow or leave calm spots in the container so the fish can swim at a relaxed pace.

  5. 5Choose Tank Mates Carefully

    Like other medaka, it is generally mild-mannered, but long fins can be damaged if other fish nip at them. Avoid fin-nipping or aggressive fish, and keep it with calm medaka of similar size.

  6. 6Protect the Fins

    Long fins may get scuffed on sharp decorations or nets. If a fin looks torn or cloudy, review your water quality and how often you change the water, and keep a close eye on the fish. If the problem continues, consult an experienced keeper or a specialist.

  7. 7Prepare Before Arrival

    Before the fish arrive, have a container, dechlorinated water, and food ready. After arrival, acclimate them slowly to the water temperature and quality, then leave them in peace at first.

Frequently asked questions about Kitatsuji Hire-Long Medaka

Q.What is Kitatsuji Hire-Long Medaka known for?
A.It is known for dorsal and anal fins that extend long toward the front and rear, males with no notch in the dorsal fin, and a large tail base. It was certified as Japan Medaka Association new variety No. 36 and became the starting point of the wide-fin trait.
Q.Can a beginner keep this medaka?
A.Its care difficulty is rated beginner-friendly. Because the fins are long, avoid strong currents and aggressive tank mates, and be careful about sudden changes in water quality.
Q.How large does it grow?
A.There is little data on the adult size of this variety, and individuals vary. Individuals vary.
Q.How long does it live?
A.Reliable sources on lifespan are limited, so we cannot give a definite number of years. Watch its appetite, swimming, and fin condition, and keep up careful water management.
Q.Can it live with other medaka?
A.It is mild-mannered, so it should get along with calm medaka of similar size. Avoid fish that nip fins, and move it to a separate container if you see any damage.

Useful tools for Kitatsuji Hire-Long Medaka care

💧Aquarium Volume CalculatorCalculate water volume, weight, and heater wattage from tank dimensions🧪Water Quality CheckerFind compatible fish, shrimp, plants & corals based on pH, temperature & hardness📅Breeding CalendarVisual monthly breeding season guide for each species🤝Compatibility CheckerCheck compatibility between two species on a 5-level scale📊Fish Compatibility MatrixCheck fish compatibility at a glance with our matrix chart🗓️Seasonal Care CalendarMonthly care events and seasonal management tips at a glance🚿Water Change CalculatorAuto-calculate optimal water change frequency and volume by tank size and fish count🐠Stocking CalculatorCalculate max fish capacity for your tank size with overstocking alerts🧬Breeding PlannerSelect parent varieties to view breeding schedules and offspring patterns🏞️Tank Layout PlannerGet substrate, plant & hardscape suggestions based on tank size and style🧮Care Cost SimulatorEstimate initial, monthly & annual costs by category, care level and quantity⚖️Species Comparison ToolCompare two species side by side: care difficulty, size, lifespan & temperature🎯Pet Match DiagnosticAnswer 7 questions to find your top 3 perfect pets📋Lifetime Cost SimulatorEstimate lifespan and lifetime costs by species for dogs, cats, reptiles and more🚚Transport Safety CheckerCheck transport safety score and precautions by category, season, method and distance💊Medication Dosage CalculatorCalculate proper medication dosage by body weight and medicine type for fish, reptiles, and small animals

Learn more about Kitatsuji Hire-Long Medaka in the encyclopedia

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Care difficulty, lifespan, size and diet — all basics covered.

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