Species Description…

Scientific Name: Chaetodon unimaculatus

Common Name: Teardrop Butterflyfish

Species Group: Butterflyfish

Habitat: Reef Safe with Caution

Care Level: Intermediate

Temperament: Peaceful

Diet Type: Omnivore

Role in Aquarium: Showpiece Fish

Max Fish Length: 8 (inches)

Min Aquarium Size: 75 (gallons)

Native Range: Indo-Pacific, including the Red Sea, Indonesia, and the Great Barrier Reef

Chaetodon Unimaculatus - The Teardrop Butterflyfish

Chaetodon Unimaculatus (The Teardrop Butterflyfish)

Native to the Indo-Pacific, commonly found in coral reefs, lagoons, and rocky reef slopes.
Easily identified by its bright yellow body with a distinctive black teardrop-shaped marking on its upper side.
A hardy and adaptable species that can thrive in well-maintained aquariums.
Often observed alone, in pairs, or in small groups in the wild.
Best suited for an established marine aquarium with ample swimming space and live rock structures.

Omnivorous, feeding on coral polyps, small invertebrates, and algae in its natural habitat.
Requires a varied diet including sponge-based foods, frozen mysis shrimp, and marine algae in captivity.
Adapts well to prepared foods but benefits from a mix of fresh and frozen options.
Multiple small meals per day help maintain energy levels and support healthy digestion.
A nutrient-rich diet enhances immune function and promotes vibrant coloration.

Prefers coral reef environments with moderate water flow and plenty of rock formations.
Frequently found near reef edges and sheltered coastal areas where food sources are abundant.
Aquarium setups should include live rock to encourage natural grazing and provide shelter.
Requires high-quality filtration and stable water conditions to prevent stress.
Providing shaded areas alongside open swimming spaces supports natural behaviors.

Optimal water temperature: 74-80°F (23-27°C) to maintain overall health.
Preferred pH range: 8.1-8.4, with a salinity level of 1.020-1.025.
Requires consistent water quality with frequent maintenance and water changes.
Not considered fully reef-safe, as it may nip at corals and sessile invertebrates.
Providing live rock enhances grazing opportunities and supports natural behaviors.

Generally peaceful but may exhibit territorial tendencies toward other butterflyfish.
Compatible with tangs, angelfish, and other semi-aggressive marine species.
Not ideal for reef tanks due to its tendency to graze on coral polyps.
Should be housed with similarly sized fish to prevent competition for food.
Providing ample space and hiding areas minimizes territorial aggression.

An active and inquisitive species that enjoys exploring its environment.
Frequently seen grazing on rock surfaces and interacting with tankmates.
May take time to acclimate to captivity but becomes more confident with proper care.
Providing live rock encourages natural foraging behavior and helps keep the fish engaged.
Over time, it may recognize its caretaker and show curiosity, especially during feeding sessions.