Can False Glass Catfish and Neon Green Rasbora (Kubotai) Live Together?

Reviewed by Guidarium Editorial DeskUpdated May 6, 2026
Possible with Caution

Keeping False Glass Catfish and Neon Green Rasbora (Kubotai) together is possible but requires caution due to potential behavioral clashes. Provide a spacious tank of at least 110 litres with plenty of hiding spots to reduce stress. Monitor behaviour closely, especially during the first few weeks.


At a Glance

False Glass Catfish

Kryptopterus macrocephalus

Neon Green Rasbora (Kubotai)

Microdevario kubotai

🐠Family Group
False Glass Catfish
Catfish
Neon Green Rasbora (Kubotai)
Cyprinids
Temperament
False Glass Catfish
Peaceful (2/10)
Neon Green Rasbora (Kubotai)
Peaceful (1/10)
Temperature
✓ Compatible
False Glass Catfish
22–28°C
Neon Green Rasbora (Kubotai)
20–27°C
pH Range
✓ Compatible
False Glass Catfish
5–7
Neon Green Rasbora (Kubotai)
6–7.5
Hardness (dGH)
✓ Compatible
False Glass Catfish
1–8
Neon Green Rasbora (Kubotai)
2–10
Water Type
✓ Compatible
False Glass Catfish
Freshwater Only
Neon Green Rasbora (Kubotai)
Freshwater Only
Flow Preference
✓ Compatible
False Glass Catfish
Low
Neon Green Rasbora (Kubotai)
Moderate
Min Tank Volume
Combined: 110 L
False Glass Catfish
110 L
Neon Green Rasbora (Kubotai)
38 L
Swimming Level
Shared: 1 zone
False Glass Catfish
Middle
Neon Green Rasbora (Kubotai)
TopMiddle
🏷️Behavior Tags
False Glass Catfish
Shy / Slow Moving (Easily Stressed)Fry PredatorShrimp Eater
Neon Green Rasbora (Kubotai)
Nano / Bite-sized (Predation Risk)Hyperactive / Fast SwimmerJumper (Lid Required)
Stocking calculator

Can your tank handle False Glass Catfish and Neon Green Rasbora (Kubotai)?

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.

False Glass Catfish
Neon Green Rasbora (Kubotai)
Test both in my tank

Behaviour & Temperament

False Glass Catfish is a peaceful species (2/10), while Neon Green Rasbora (Kubotai) is peaceful (1/10). This modest difference means False Glass Catfish may occasionally assert dominance over Neon Green Rasbora (Kubotai).

False Glass Catfish and Neon Green Rasbora (Kubotai) both frequent the Middle (Open Water) region of the setup. This overlap can increase competition for space, so providing ample room and cover is important to keep both species comfortable.

Additional behavioural considerations to keep in mind: Hyperactive swimmers can stress shy, slow-moving species through constant motion. Shrimp eaters may also prey on very small nano fish.

Worth noting: Neon Green Rasbora (Kubotai) is a known jumper, so a tight-fitting lid is essential.

To improve the chances of a peaceful coexistence in this community tank: A larger aquarium with ample hiding spots can help diffuse aggression and give the less dominant fish space to retreat.

Water Parameters

The safe temperature window for both species falls between 22°C and 27°C. Aim for the midpoint of this range (around 24.5°C) for optimal comfort.

Both fish can tolerate a pH between 6 and 7. Maintaining a stable value within this band is more important than hitting an exact number.

For general hardness, the shared comfort zone is 2–8 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house False Glass Catfish and Neon Green Rasbora (Kubotai) 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.

Because this pairing requires extra vigilance, include plenty of hiding spots — caves, driftwood, and dense plant clusters — so the less dominant fish can retreat when needed.

Specific environmental needs for this combination include: Plants - Densely covered, Plants - Floating, Leaf Litter/Blackwater, Plants - lighly covered. Meeting these requirements will help both species thrive.

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

Why This Pairing Needs Extra Planning in Practice

This pairing usually fails when the tank is treated like a standard mixed community and the caution flags are ignored. False Glass Catfish and Neon Green Rasbora (Kubotai) need extra room, more cover, and closer observation during the first few weeks so small aggression, feeding, or territory issues do not snowball into a long-term problem.

Suitable Tank Sizes

Standard aquarium sizes large enough for both False Glass Catfish and Neon Green Rasbora (Kubotai).

Show 10 more tank sizes

Diet & Feeding

Feeding time deserves special attention with this pairing. False Glass Catfish is a known shrimp eater and may prey on small invertebrates or nano fish like Neon Green Rasbora (Kubotai).

Frequently Asked Questions

Can False Glass Catfish and Neon Green Rasbora (Kubotai) live together?

They can coexist, but the pairing requires careful monitoring. Provide ample space (at least 110 litres), plenty of hiding spots, and watch for signs of stress or aggression.

What size tank do False Glass Catfish and Neon Green Rasbora (Kubotai) 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 False Glass Catfish and Neon Green Rasbora (Kubotai) together?

Keep the aquarium between 22°C and 27°C. A target of around 24.5°C sits comfortably within both species' preferred ranges.

Are False Glass Catfish or Neon Green Rasbora (Kubotai) aggressive?

False Glass Catfish is peaceful (2/10) and Neon Green Rasbora (Kubotai) is peaceful (1/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do False Glass Catfish and Neon Green Rasbora (Kubotai) need?

Both species overlap in the 6–7 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 6, 2026
Last updated
May 6, 2026
Issues or corrections?
Contact the editorial team

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