Can Blue Dolphin (Hap) and Florida Flagfish Live Together?

🟢Ideal Tank Mates

Yes, Blue Dolphin (Hap) and Florida Flagfish are ideal tank mates. Both species share compatible water parameters and peaceful temperaments, making them well-suited for a community aquarium. A minimum tank size of 570 litres is recommended.


At a Glance

Blue Dolphin (Hap)

Cyrtocara moorii

Florida Flagfish

Jordanella floridae

🐠Family Group
Blue Dolphin (Hap)
Cichlids - African
Florida Flagfish
Killifish
Temperament
Blue Dolphin (Hap)
Semi-Aggressive (5/10)
Florida Flagfish
Semi-Aggressive (5/10)
Temperature
✓ Compatible
Blue Dolphin (Hap)
24–28°C
Florida Flagfish
18–26°C
pH Range
✓ Compatible
Blue Dolphin (Hap)
7.5–8.6
Florida Flagfish
6.5–8.5
Hardness (dGH)
✓ Compatible
Blue Dolphin (Hap)
10–25
Florida Flagfish
10–25
Water Type
✓ Compatible
Blue Dolphin (Hap)
Freshwater Only
Florida Flagfish
Brackish Tolerant
Flow Preference
✓ Compatible
Blue Dolphin (Hap)
Moderate
Florida Flagfish
Low
Min Tank Volume
Combined: 570 L
Blue Dolphin (Hap)
475 L
Florida Flagfish
75 L
Swimming Level
Shared: 2 zones
Blue Dolphin (Hap)
MiddleBottom
Florida Flagfish
MiddleBottom
🏷️Behavior Tags
Blue Dolphin (Hap)
Digger (Disturbs Substrate)Hyperactive / Fast SwimmerAggressive to same species/look-alikes
Florida Flagfish
Fin NipperAggressive to same species/look-alikesHyperactive / Fast SwimmerTerritorial (Defends specific area)

Behaviour & Temperament

Both Blue Dolphin (Hap) and Florida Flagfish are moderately assertive species with an aggression score of 5/10. Their matching temperaments mean neither fish is likely to dominate the other in a shared aquarium.

Blue Dolphin (Hap) and Florida Flagfish both frequent the Middle (Open Water) and Bottom (Substrate) region of the setup. This overlap can increase competition for space, so providing ample room and cover is important to keep both species comfortable.

Water Parameters

The safe temperature window for both species falls between 24°C and 26°C. Aim for the midpoint of this range (around 25.0°C) for optimal comfort.

Both fish can tolerate a pH between 7.5 and 8.5. Maintaining a stable value within this band is more important than hitting an exact number.

For general hardness, the shared comfort zone is 10–25 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house Blue Dolphin (Hap) and Florida Flagfish together, plan for an aquarium of at least 570 litres with a minimum length of 150 cm. This accounts for the larger species' space requirements with an additional 20 % buffer to reduce territorial tension.

Providing a mix of open swimming space and sheltered areas with rocks, driftwood, or plants will keep both species comfortable and allow natural behaviour.

Specific environmental needs for this combination include: Sand (Sifters), Smooth Gravel (Sensitive Barbels), Established Algae (Otocinclus), Plants - Densely covered. Meeting these requirements will help both species thrive.

Both species do well with moderate (standard) water movement, so a standard filtration setup rated for the tank volume should suffice.

Frequently Asked Questions

Can Blue Dolphin (Hap) and Florida Flagfish live together?

Yes. Blue Dolphin (Hap) and Florida Flagfish are considered ideal tank mates. Their water parameters, temperaments, and behaviour profiles are well matched for a community aquarium.

What size tank do Blue Dolphin (Hap) and Florida Flagfish need?

A minimum of 570 litres (tank length at least 150 cm) is recommended. This provides enough space for both species to establish their own areas and reduces the likelihood of territorial disputes.

What water temperature is best for Blue Dolphin (Hap) and Florida Flagfish together?

Keep the aquarium between 24°C and 26°C. A target of around 25.0°C sits comfortably within both species' preferred ranges.

Are Blue Dolphin (Hap) or Florida Flagfish aggressive?

Blue Dolphin (Hap) is moderately assertive (5/10) and Florida Flagfish is moderately assertive (5/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Blue Dolphin (Hap) and Florida Flagfish need?

Both species overlap in the 7.5–8.5 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.

Will Florida Flagfish nip Blue Dolphin (Hap)'s fins?

Florida Flagfish is a known fin nipper. If Blue Dolphin (Hap) has long or flowing fins, there is a real risk of fin damage. Keeping Florida Flagfish in a larger group can help redirect nipping behaviour toward conspecifics.

How do I manage Florida Flagfish's territorial behaviour?

Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Florida Flagfish space to claim a territory without encroaching on the other fish's area. Adding décor that divides the tank into distinct zones works especially well.


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