๐Ÿ  Fish Compatibility Guide

Can Black Neon Tetra and Blue Tang Live Together?

Updated September 23, 2026 ยท FishCare AI Editorial Team

โŒ Not Compatible โ€” Compatibility Score: 0/100
0/100 โ€” Not Compatible

Black Neon Tetra and Blue Tang Compatibility Overview

Black Neon Tetra and Blue Tang are generally not recommended to be housed together. One of these is a marine species and the other is not; they cannot share one aquarium. Their pH ranges do not meet: Black Neon Tetra wants 5.0โ€“7.5 and Blue Tang wants 8.1โ€“8.4. Review the behavior and water details before deciding whether to attempt the pairing.

Compatibility factors for Black Neon Tetra and Blue Tang
FactorBlack Neon TetraBlue TangVerdict
Temperature68โ€“82ยฐF72โ€“82ยฐFโœ… 72โ€“82ยฐF
pH Range5.0โ€“7.58.1โ€“8.4โŒ No overlap
Temperamentpeacefulsemiโš ๏ธ Monitor
Adult Size1.4 in12.0 inโŒ 9ร— difference
Min. Group8+1+See below
Min. Tank Size100 gallons (for both species)โ€”

Compatibility Positives

A stable shared temperature range is available.
Temperament risk is relatively low when normal group sizes are maintained.

Incompatibility Reasons

One of these is a marine species and the other is not; they cannot share one aquarium.
Their pH ranges do not meet: Black Neon Tetra wants 5.0โ€“7.5 and Blue Tang wants 8.1โ€“8.4.

Species Profiles

Black Neon Tetra โ€” Hyphessobrycon herbertaxelrodi

Black Neon Tetra and Blue Tang compatibility โ€” Black Neon Tetra

The Black Neon Tetra is a popular freshwater species known for its vibrant colors and peaceful temperament. It is an excellent addition to community tanks, thriving in groups of 6 or more. These tetras require a well-maintained aquarium with a flowing current and plenty of swimming space. With proper care, they can live up to 5 years.

โ†’ Full Black Neon Tetra care guide

Blue Tang โ€” Paracanthurus hepatus

Black Neon Tetra and Blue Tang compatibility โ€” Blue Tang

The Blue Tang is a popular saltwater fish known for its vibrant blue color and yellow stripes. These fish are generally peaceful and can be kept in a community tank with other non-aggressive species. They require a well-maintained, spacious tank with plenty of swimming space and hiding spots.

โ†’ Full Blue Tang care guide

Frequently Asked Questions

Can Black Neon Tetra live with Blue Tang?

Generally not recommended. Black Neon Tetra and Blue Tang are generally not recommended to be housed together. One of these is a marine species and the other is not; they cannot share one aquarium. Their pH ranges do not meet: Black Neon Tetra wants 5.0โ€“7.5 and Blue Tang wants 8.1โ€“8.4. Review the behavior and water details before deciding whether to attempt the pairing.

What tank size do I need for Black Neon Tetra and Blue Tang together?

A minimum of 100 gallons is recommended for keeping Black Neon Tetra and Blue Tang together. A larger tank improves water stability and reduces territorial conflict.

What temperature suits both Black Neon Tetra and Blue Tang?

72โ€“82ยฐF โ€” inside Black Neon Tetra's 68โ€“82ยฐF and Blue Tang's 72โ€“82ยฐF.

Is a Black Neon Tetra aggressive toward a Blue Tang?

Black Neon Tetra is peaceful and Blue Tang is semi. No major aggression issues are expected between these species.

Related Compatibility Guides

Tank Size for Black Neon Tetra and Blue Tang

Use the scenario that matches the actual group sizes and temperament you plan to keep.

ScenarioTankWhen it applies
Minimum viable180 galOnly for the recommended minimum groups, mature filtration, and close monitoring.
Recommended community300 galAdds territory, swimming room, and a safer buffer for behavior.
Low-conflict setup350 galBest when keeping larger schools or reducing territorial pressure.