Can Finger Fish and Flower Stingray Live Together?

Reviewed by Guidarium Editorial DeskUpdated May 6, 2026
Not Recommended

Finger Fish and Flower Stingray are not recommended as tank mates due to incompatible water types. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.


At a Glance

Finger Fish

Monodactylus argenteus

Flower Stingray

Potamotrygon schroederi

🐟Family Group
Finger Fish
Oddballs
Flower Stingray
Oddballs
Temperament
Finger Fish
Semi-Aggressive (5/10)
Flower Stingray
Semi-Aggressive (6/10)
Temperature
✓ Compatible
Finger Fish
24–28°C
Flower Stingray
24–29°C
pH Range
✓ Compatible
Finger Fish
7.5–8.5
Flower Stingray
6–7.5
Hardness (dGH)
✓ Compatible
Finger Fish
12–30
Flower Stingray
1–12
Water Type
✗ No overlap
Finger Fish
Brackish Required
Flower Stingray
Freshwater Only
Flow Preference
✓ Compatible
Finger Fish
Moderate
Flower Stingray
Moderate
Min Tank Volume
Combined: 1700 L
Finger Fish
470 L
Flower Stingray
1700 L
Swimming Level
✓ Different zones
Finger Fish
Middle
Flower Stingray
Bottom
🏷️Behavior Tags
Finger Fish
Hyperactive / Fast SwimmerFin NipperPlant DestroyerAggressive to same species/look-alikes
Flower Stingray
Piscivore (Eats small/nano fish)Shrimp EaterFry PredatorDigger (Disturbs Substrate)Plant Destroyer
Stocking calculator

Can your tank handle Finger Fish and Flower Stingray?

Compatibility is only part of the answer. Test both fish with your real tank size, current stock, and maintenance needs to see if you have enough space and a safe stocking level before you add them.

Finger Fish
Flower Stingray
Test both in my tank

Behaviour & Temperament

Finger Fish is a moderately assertive species (5/10), while Flower Stingray is moderately assertive (6/10). This modest difference means Flower Stingray may occasionally assert dominance over Finger Fish.

In terms of spatial distribution, Finger Fish prefers the Middle (Open Water) zone, whereas Flower Stingray occupies the Bottom (Substrate) zone. Because they use different levels of the water column, territorial disputes are less likely and the tank will appear more balanced.

Water Parameters

The safe temperature window for both species falls between 24°C and 28°C. Aim for the midpoint of this range (around 26.0°C) for optimal comfort.

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

For general hardness, the shared comfort zone is 12–12 dGH. Regular testing will ensure conditions stay within this range.

Crucially, these species require different water types — one needs freshwater while the other requires brackish conditions. This is a hard barrier to keeping them together.

Tank Setup

To house Finger Fish and Flower Stingray together, plan for an aquarium of at least 1700 litres with a minimum length of 240 cm. This recommendation combines the stricter species minimums with a community-load allowance so the pairing has realistic long-term space and filtration headroom.

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: Smooth Gravel (Sensitive Barbels), Sand (Sifters). 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.

Why This Pairing Usually Fails in Practice

Finger Fish and Flower Stingray are the kind of pair that can look acceptable in a shop but become a maintenance problem at home. The main risk is not a single number in the chart; it is the way incompatible behavior, water needs, or pressure on space compounds over time once both fish are established in the same tank.

Frequently Asked Questions

Can Finger Fish and Flower Stingray live together?

No. This combination is not recommended. Key incompatibilities — such as different water type needs — make cohabitation unsafe.

What size tank do Finger Fish and Flower Stingray need?

A minimum of 1700 litres (tank length at least 240 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 Finger Fish and Flower Stingray together?

Keep the aquarium between 24°C and 28°C. A target of around 26.0°C sits comfortably within both species' preferred ranges.

Are Finger Fish or Flower Stingray aggressive?

Finger Fish is moderately assertive (5/10) and Flower Stingray is moderately assertive (6/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Finger Fish and Flower Stingray need?

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

Will Finger Fish nip Flower Stingray's fins?

Finger Fish is a known fin nipper. If Flower Stingray has long or flowing fins, there is a real risk of fin damage. Keeping Finger Fish in a larger group can help redirect nipping behaviour toward conspecifics.

Editorial Review

Guidarium Editorial Desk

Reviewed against Guidarium care, stocking, and compatibility standards. Read the editorial policy.

Last reviewed
May 6, 2026
Last updated
May 6, 2026
Issues or corrections?
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