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Twig Catfish© Cedricguppy - Loury Cédric / CC BY-SA 4.0

Twig Catfish

The Twig Catfish (Farlowella) is a slender, elongated catfish whose twig-like body lets it blend almost invisibly among driftwood in the aquarium. Its olive-to-tan coloring is marked with irregular dark bands running from head to tail. As an algae grazer, it spends much of its time quietly grazing surfaces clean, making it a popular addition to planted tanks. However, it is highly sensitive to changes in water quality, and large water changes can sometimes cause it to decline or even die. For these reasons, it's best suited to experienced keepers who can maintain stable, well-established water conditions.

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About Twig Catfish

Farlowella, the Twig Catfish, is a slender, twig-shaped catfish known for its algae-grazing diet and sensitivity to water quality changes. Best suited to experienced aquarists; adults reach 14–16cm.

7 things to know before welcoming a Twig Catfish

  1. 1For Experienced Keepers

    Farlowella is extremely sensitive to sudden shifts in water quality, and large water changes can cause it to decline or even die. It's best suited to keepers who already have aquarium experience and can maintain stable water conditions.

  2. 2Change Water Gradually

    To avoid sudden shifts in water chemistry, water changes should be small and frequent rather than large and infrequent. When introducing a new fish, take extra time with slow acclimation.

  3. 3Diet: Algae Grazer

    As an algae eater, it's often seen grazing on biofilm and algae within the tank. In tanks with little algae growth, supplement its diet with sinking, plant-based foods.

  4. 4Twig-Like Camouflage

    Its slender olive-to-tan body with irregular dark bands lets it blend seamlessly with driftwood and plants, resembling an actual twig. Providing plenty of driftwood gives it secure places to rest.

  5. 5Calm Temperament

    Slow-moving and docile, it doesn't fare well alongside aggressive tankmates. Pairing it with other peaceful species helps maintain a calm environment.

  6. 6Adults Reach 14–16cm

    Fully grown individuals reach around 14 to 16cm in length. Make sure the tank offers enough swimming space and depth of layout for its elongated body.

  7. 7Established Tanks Only

    Avoid adding it to a newly set-up tank with unstable water parameters; wait until biological filtration is well established. Continue monitoring water quality after introduction to catch changes early.

Frequently asked questions about Twig Catfish

Q.Is the Twig Catfish suitable for beginners?
A.Farlowella is considered a species for experienced keepers due to its sensitivity to sudden changes in water quality. It's best suited to those already comfortable with tank cycling and water quality management.
Q.Will it help control algae in my tank?
A.It does graze on algae, but in tanks with little algae growth, its food supply may not be sufficient on its own. Supplementing with sinking, plant-based foods is recommended.
Q.Can it be kept with other fish?
A.It's docile and slow-moving, so avoid pairing it with aggressive or overly active tankmates. Peaceful, similarly calm species make the best companions.
Q.What should I watch for during water changes?
A.It's extremely sensitive to sudden water quality shifts caused by large water changes, which can affect its health. Perform smaller, more frequent water changes instead.
Q.Is the Twig Catfish subject to CITES?
A.The Twig Catfish is not subject to CITES.

Useful tools for Twig Catfish 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🍽️Feeding GuideCheck feeding frequency, portion sizes & supplements by species and growth stage🤝Compatibility CheckerCheck compatibility between two species on a 5-level scale📊Fish Compatibility MatrixCheck fish compatibility at a glance with our matrix chart🔄Nitrogen Cycle GuideAuto-calculate bacteria colonization timeline for new tank cycling🗓️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 alertsElectricity Cost SimulatorCalculate monthly and annual electricity costs for care equipment with presets🧬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⏱️Quarantine & Acclimation TimerManage quarantine periods and acclimation steps with countdown timers. Includes recommended durations by species

Learn more about Twig Catfish in the encyclopedia

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

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