Yellow-tail Damselfish Marine (2–3 cm) is a hardy, colorful, reef-safe marine fish, ideal for nano and community saltwater aquariums.

Yellow-tail Damselfish Marine (2–3 cm) – Detailed Product Description

• General Overview

  • The Yellow-tail Damselfish (Chrysiptera parasema) is a small, vibrant marine fish with striking blue body coloration and a bright yellow tail.

  • At 2–3 cm, these juveniles are perfect for nano tanks, reef setups, and beginner-friendly marine aquariums.

  • Known for their hardy nature, they are easy to care for and adapt well to a variety of tank conditions.

  • Their lively personality and bright coloration make them a popular choice for hobbyists looking to enhance aquarium aesthetics.

• Appearance & Coloration

  • Electric blue body with a distinct yellow caudal (tail) fin.

  • Small, oval-shaped body with a laterally compressed profile.

  • Fins are short and agile, allowing quick darting movements.

  • Juveniles display slightly lighter shades, which intensify as they mature.

  • Bold coloration stands out against live rock and coral in reef tanks.

• Temperament & Behavior

  • Active, hardy, and semi-aggressive, especially in smaller tanks.

  • Often patrols territory around rocks and corals.

  • Can display minor territorial behavior toward conspecifics, but generally peaceful with other species.

  • Very energetic swimmers; excellent for mid- to upper-level tank zones.

  • Benefits from multiple hiding spots to reduce stress and territorial disputes.

• Adult Size & Lifespan

  • Adult size: Up to 6–7 cm

  • Juveniles at 2–3 cm grow steadily over a few months under proper care.

  • Lifespan: 4–6 years in well-maintained aquariums.

  • Growth is moderate, and vibrant coloration develops fully with stable conditions.

• Tank Size & Aquarium Setup

  • Minimum tank size: 40 liters (10 gallons) for a small group.

  • Live rock provides natural hiding spots and grazing surfaces.

  • Open swimming areas allow active movement and play behavior.

  • Suitable for reef aquariums as they are generally reef-safe with hard corals.

  • Moderate water flow preferred; avoids overly strong currents that can stress juveniles.

• Water Conditions (Marine Parameters)

  • Temperature: 24–27 °C

  • Salinity: 1.023–1.025 SG

  • pH: 8.1–8.4

  • Alkalinity: 8–12 dKH

  • Ammonia & Nitrite: 0 ppm

  • Nitrate: Below 20 ppm

  • Stable water parameters are essential to maintain health, coloration, and longevity.

  • Weekly water changes of 10–20% recommended to maintain optimal water quality.

• Feeding Habit & Diet

  • Omnivorous and hardy feeder, accepts a wide range of foods.

  • Recommended diet includes:

    • Flake or pellet food for marine fish

    • Frozen or live brine shrimp and mysis shrimp

    • Algae-based foods and spirulina flakes

    • Occasional finely chopped seafood

  • Feed 1–2 times daily, in small portions to prevent waste and maintain water quality.

• Tank Mates & Compatibility

  • Best with peaceful to semi-aggressive marine fish such as:

    • Gobies

    • Blennies

    • Small wrasses

    • Other damselfish (monitor for territorial behavior)

  • Compatible with reef invertebrates and corals, though territorial disputes can occur in small tanks.

  • Avoid keeping with very aggressive or large predatory fish.

• Care Level & Maintenance

  • Care level: Easy

  • Suitable for beginners due to hardiness and adaptability.

  • Regular water monitoring, diet, and tank maintenance ensure long-term health.

  • Introduce in small groups to encourage social interaction and reduce aggression.

• Health & Special Notes

  • Hardy and resilient to minor water parameter fluctuations.

  • Stress may result in hiding or territorial displays; provide adequate hiding spaces.

  • Avoid copper-based medications as they are toxic to marine fish.

  • Juveniles may be shy initially but adapt quickly with stable conditions.

• Why Choose Yellow-tail Damselfish Marine (2–3 cm)?

  • Vibrant blue body with striking yellow tail

  • Reef-safe and hardy marine fish

  • Active, engaging, and beginner-friendly

  • Suitable for nano, reef, and community tanks

  • Long-lived and visually stunning with proper care

The Yellow-tail Damselfish Marine (2–3 cm) is a hardy, energetic, and colorful addition to any marine aquarium. With stable water parameters, a proper diet, and reef-safe companions, this juvenile damselfish will thrive, adding movement, color, and life to your saltwater tank.