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Bicolor Angelfish© Rickard Zerpe / CC BY 2.0

Bicolor Angelfish

The Bicolor Angelfish is a small angelfish species known for its striking two-tone coloring: a vivid yellow front half and tail fin set against a deep blue rear half, accented by a blue patch above each eye. Reaching a maximum size of about 15 cm, it stays more manageable than many larger angelfish while still commanding attention in the tank. It tends to be fairly active and can show territorial behavior, so tankmate choices deserve some thought. Because it nips at coral polyps, it isn't suited to reef tanks, but in a fish-only marine setup its bold colors really shine. Classified as an intermediate-level fish to keep, it's a great choice for hobbyists who already have the basics of water quality management down.

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About Bicolor Angelfish

The Bicolor Angelfish features striking yellow-and-blue coloring and reaches about 15 cm at most. An intermediate-level fish to keep, it isn't suited to reef tanks since it nips at coral.

7 things to know before welcoming a Bicolor Angelfish

  1. 1A Coral-Nipping Habit

    This species is generally not suited to reef tanks, as it tends to nip at coral and anemones. If you're considering mixed tankmates, plan your tank setup with this habit in mind.

  2. 2Maximum Adult Size

    Even at full growth, it stays around 15 cm at most. Compared to larger angelfish species, it has a more compact, manageable size.

  3. 3Territorial Tendencies

    It can be fairly territorial and may act aggressively toward similarly colored or same-species fish. When housing it with others, think carefully about layout and the order in which fish are introduced.

  4. 4Intermediate-Level Care

    This fish can be somewhat sensitive to water quality changes, which is why it's considered suited to intermediate keepers. A tank with stable, well-established water conditions is preferable to a newly set-up one.

  5. 5Providing Hiding Spots

    Like other angelfish, it has a natural instinct to retreat into crevices when it feels threatened. Be sure to include plenty of live rock or similar structures where it can hide.

  6. 6Varied Diet

    It's omnivorous and generally takes to prepared foods fairly well, though it also favors algae and marine plant matter. Offering a mix of food types helps ensure balanced nutrition.

  7. 7Checking Your Tank First

    Before bringing one home, check that your tank size, water quality, and existing tankmates are a good match. If you're considering a reef tank in particular, plan ahead with its coral-nipping tendency in mind.

Frequently asked questions about Bicolor Angelfish

Q.Can it be kept in a tank with coral?
A.It's generally not recommended for reef tanks, since it tends to nip at coral. A fish-only marine tank is a better fit.
Q.Is it suitable for beginner aquarists?
A.It's generally considered an intermediate-level fish to keep. It's best to have the basics of water quality management down before bringing one home.
Q.How large does it grow?
A.It reaches a maximum size of about 15 cm. That's relatively compact compared to larger angelfish species.
Q.Can it be kept with other fish?
A.It can be territorial and may not get along well with same-species or similarly colored fish. When planning tankmates, consider tank layout and compatibility carefully.
Q.Is it listed under CITES?
A.No, the Bicolor Angelfish is not listed under CITES.

Useful tools for Bicolor Angelfish 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 alerts🏞️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🚚Transport Safety CheckerCheck transport safety score and precautions by category, season, method and distance⏱️Quarantine & Acclimation TimerManage quarantine periods and acclimation steps with countdown timers. Includes recommended durations by species

Learn more about Bicolor Angelfish in the encyclopedia

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

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