Can Bumblebee Goby (Brackish) and Gertrude's Spotted Blue-eye Live Together?

🔴Not Recommended

Bumblebee Goby (Brackish) and Gertrude's Spotted Blue-eye 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

Bumblebee Goby (Brackish)

Brachygobius xanthozonus

Gertrude's Spotted Blue-eye

Pseudomugil gertrudae

🐠Family Group
Bumblebee Goby (Brackish)
Gobies & Gudgeons
Gertrude's Spotted Blue-eye
Rainbowfish
Temperament
Bumblebee Goby (Brackish)
Mostly Peaceful (4/10)
Gertrude's Spotted Blue-eye
Peaceful (2/10)
Temperature
✓ Compatible
Bumblebee Goby (Brackish)
24–28°C
Gertrude's Spotted Blue-eye
21–28°C
pH Range
✓ Compatible
Bumblebee Goby (Brackish)
7–8.5
Gertrude's Spotted Blue-eye
6–7.5
Hardness (dGH)
✓ Compatible
Bumblebee Goby (Brackish)
10–25
Gertrude's Spotted Blue-eye
5–15
Water Type
✗ No overlap
Bumblebee Goby (Brackish)
Brackish Required
Gertrude's Spotted Blue-eye
Freshwater Only
Flow Preference
✓ Compatible
Bumblebee Goby (Brackish)
Low
Gertrude's Spotted Blue-eye
Moderate
Min Tank Volume
Combined: 46 L
Bumblebee Goby (Brackish)
38 L
Gertrude's Spotted Blue-eye
38 L
Swimming Level
✓ Different zones
Bumblebee Goby (Brackish)
Bottom
Gertrude's Spotted Blue-eye
TopMiddle
🏷️Behavior Tags
Bumblebee Goby (Brackish)
Nano / Bite-sized (Predation Risk)Territorial (Defends specific area)Aggressive to same species/look-alikesShrimp Eater
Gertrude's Spotted Blue-eye
Nano / Bite-sized (Predation Risk)Hyperactive / Fast SwimmerJumper (Lid Required)Fry Predator

Behaviour & Temperament

Bumblebee Goby (Brackish) is a generally mild-mannered species (4/10), while Gertrude's Spotted Blue-eye is peaceful (2/10). This modest difference means Bumblebee Goby (Brackish) may occasionally assert dominance over Gertrude's Spotted Blue-eye.

In terms of spatial distribution, Bumblebee Goby (Brackish) prefers the Bottom (Substrate) zone, whereas Gertrude's Spotted 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.

Additional behavioural considerations to keep in mind: Shrimp eaters may also prey on very small nano fish.

Worth noting: Gertrude's Spotted Blue-eye is a known jumper, so a tight-fitting lid is essential.

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 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 10–15 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 Bumblebee Goby (Brackish) and Gertrude's Spotted Blue-eye together, plan for an aquarium of at least 46 litres with a minimum length of 45 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), Shells (Breeding/Hiding), Smooth Gravel (Sensitive Barbels), Plants - Densely covered, Plants - Floating, Leaf Litter/Blackwater. 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.

Diet & Feeding

Feeding time deserves special attention with this pairing. Bumblebee Goby (Brackish) is a known shrimp eater and may prey on small invertebrates or nano fish like Gertrude's Spotted Blue-eye.

Frequently Asked Questions

Can Bumblebee Goby (Brackish) and Gertrude's Spotted Blue-eye live together?

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

What size tank do Bumblebee Goby (Brackish) and Gertrude's Spotted Blue-eye need?

A minimum of 46 litres (tank length at least 45 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 Bumblebee Goby (Brackish) and Gertrude's Spotted Blue-eye 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 Bumblebee Goby (Brackish) or Gertrude's Spotted Blue-eye aggressive?

Bumblebee Goby (Brackish) is generally mild-mannered (4/10) and Gertrude's Spotted Blue-eye is peaceful (2/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Bumblebee Goby (Brackish) and Gertrude's Spotted Blue-eye need?

Both species overlap in the 7–7.5 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.

How do I manage Bumblebee Goby (Brackish)'s territorial behaviour?

Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Bumblebee Goby (Brackish) 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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