Can Bearded Cory and Delicate Blue-Eye Live Together?

Reviewed by Guidarium Editorial DeskUpdated May 4, 2026
Not Recommended

Bearded Cory and Delicate Blue-Eye are not recommended as tank mates due to no temperature overlap. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.


At a Glance

Bearded Cory

Scleromystax barbatus

Delicate Blue-Eye

Pseudomugil tenellus

🐠Family Group
Bearded Cory
Catfish
Delicate Blue-Eye
Rainbowfish
Temperament
Bearded Cory
Peaceful (2/10)
Delicate Blue-Eye
Peaceful (1/10)
Temperature
✗ No overlap
Bearded Cory
16–23°C
Delicate Blue-Eye
25–32°C
pH Range
✓ Compatible
Bearded Cory
6–7.4
Delicate Blue-Eye
5–7.5
Hardness (dGH)
✓ Compatible
Bearded Cory
2–12
Delicate Blue-Eye
5–15
Water Type
✓ Compatible
Bearded Cory
Freshwater Only
Delicate Blue-Eye
Brackish Tolerant
Flow Preference
✓ Compatible
Bearded Cory
Moderate
Delicate Blue-Eye
Moderate
Min Tank Volume
Combined: 110 L
Bearded Cory
110 L
Delicate Blue-Eye
60 L
Swimming Level
✓ Different zones
Bearded Cory
Bottom
Delicate Blue-Eye
TopMiddle
🏷️Behavior Tags
Bearded Cory
Hyperactive / Fast Swimmer
Delicate Blue-Eye
Nano / Bite-sized (Predation Risk)Hyperactive / Fast SwimmerJumper (Lid Required)Fry Predator
Stocking calculator

Can your tank handle Bearded Cory and Delicate Blue-Eye?

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.

Bearded Cory
Delicate Blue-Eye
Test both in my tank

Behaviour & Temperament

Bearded Cory is a peaceful species (2/10), while Delicate Blue-Eye is peaceful (1/10). This modest difference means Bearded Cory may occasionally assert dominance over Delicate Blue-Eye.

In terms of spatial distribution, Bearded Cory prefers the Bottom (Substrate) zone, whereas Delicate Blue-Eye occupies the Top (Surface) and Middle (Open Water) zones. Because they use different levels of the water column, territorial disputes are less likely and the tank will appear more balanced.

Worth noting: Delicate Blue-Eye is a known jumper, so a tight-fitting lid is essential.

Water Parameters

There is no temperature overlap between Bearded Cory (16–23°C) and Delicate Blue-Eye (25–32°C). This fundamental mismatch makes long-term cohabitation impractical.

Both fish can tolerate a pH between 6 and 7.4. Maintaining a stable value within this band is more important than hitting an exact number.

For general hardness, the shared comfort zone is 5–12 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house Bearded Cory and Delicate Blue-Eye together, plan for an aquarium of at least 110 litres with a minimum length of 90 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: Sand (Sifters), Plants - Densely covered, Plants - Floating. 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

Bearded Cory and Delicate Blue-Eye 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.

Suitable Tank Sizes

Standard aquarium sizes large enough for both Bearded Cory and Delicate Blue-Eye.

Show 10 more tank sizes

Frequently Asked Questions

Can Bearded Cory and Delicate Blue-Eye live together?

No. This combination is not recommended. Key incompatibilities — such as non-overlapping temperature ranges — make cohabitation unsafe.

What size tank do Bearded Cory and Delicate Blue-Eye need?

A minimum of 110 litres (tank length at least 90 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 Bearded Cory and Delicate Blue-Eye together?

Unfortunately, there is no temperature range that satisfies both species. Bearded Cory requires 16–23°C, while Delicate Blue-Eye needs 25–32°C.

Are Bearded Cory or Delicate Blue-Eye aggressive?

Bearded Cory is peaceful (2/10) and Delicate Blue-Eye is peaceful (1/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Bearded Cory and Delicate Blue-Eye need?

Both species overlap in the 6–7.4 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.

Editorial Review

Guidarium Editorial Desk

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

Last reviewed
May 4, 2026
Last updated
May 4, 2026
Issues or corrections?
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