Our Guide To Keeping Green Tench Fish
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About Fish Species:
- Scientific name: Tinca tinca
- Common name: Green Tench
- Family: Cyprinidae
- Origin: Europe and parts of western Asia
- Adult length: 30 to 60 cm
- Lifespan: 15 to 20 years (some may live longer)
- Diet: Omnivore
- Care Level: Moderate
- Temperament: Peaceful and shy
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Tank Setup:
- Green Tench are best suited for large, natural-style ponds with soft, muddy bottoms where they can forage and burrow.
- Include areas with aquatic plants, both rooted and floating, as well as plenty of shaded and covered spots for hiding.
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Water Parameters:
- Maintain a pH between 6.5 and 8.0.
- Ideal temperature range is 10 to 24°C (50 to 75°F), though they are cold-tolerant and can overwinter in temperate climates.
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Filtration and Water Flow:
- Use a pond filter suitable for moderate bioload, as Tench are not particularly messy but do stir the substrate while foraging.
- Gentle water flow is preferred, mimicking the calm waters of lakes and slow-moving rivers.
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Diet:
- Feed a mix of sinking pond pellets and natural foods such as worms, insect larvae, crustaceans, and plant matter.
- Tench are bottom-feeders and prefer food that sinks. Occasional treats like bloodworms or chopped earthworms are appreciated.
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Tank mates:
- Green Tench are compatible with other peaceful pond fish like koi, goldfish, and orfe.
- They are non-aggressive and can coexist with a variety of species, though they may be outcompeted by faster feeders if not given adequate food.
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Behavior and Compatibility:
- Green Tench are bottom-dwellers that tend to be shy and secretive, especially during the day. They are more active at dusk and dawn.
- Best kept in groups of 2 or more for social comfort. They will often forage through the substrate and hide under vegetation.
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