Can Aequidens Jenaro Herrera and Popondetta Blue-eye Live Together?

Not Recommended

Aequidens Jenaro Herrera and Popondetta Blue-eye are not recommended as tank mates due to piscivorous fish will prey on nano-sized tank mates.. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.


At a Glance

Aequidens Jenaro Herrera

Aequidens sp. 'Jenaro Herrera'

Popondetta Blue-eye

Pseudomugil connieae

🐠Family Group
Aequidens Jenaro Herrera
Cichlids - South American
Popondetta Blue-eye
Rainbowfish
Temperament
Aequidens Jenaro Herrera
Semi-Aggressive (5/10)
Popondetta Blue-eye
Peaceful (1/10)
Temperature
βœ“ Compatible
Aequidens Jenaro Herrera
24–28Β°C
Popondetta Blue-eye
24–28Β°C
pH Range
βœ“ Compatible
Aequidens Jenaro Herrera
6–7.5
Popondetta Blue-eye
7.2–8
Hardness (dGH)
βœ“ Compatible
Aequidens Jenaro Herrera
2–12
Popondetta Blue-eye
8–15
Water Type
βœ“ Compatible
Aequidens Jenaro Herrera
Freshwater Only
Popondetta Blue-eye
Freshwater Only
Flow Preference
βœ“ Compatible
Aequidens Jenaro Herrera
Moderate
Popondetta Blue-eye
Moderate
Min Tank Volume
Combined: 200 L
Aequidens Jenaro Herrera
200 L
Popondetta Blue-eye
55 L
Swimming Level
Shared: 1 zone
Aequidens Jenaro Herrera
MiddleBottom
Popondetta Blue-eye
TopMiddle
🏷️Behavior Tags
Aequidens Jenaro Herrera
Territorial (Defends specific area)Piscivore (Eats small/nano fish)Fry PredatorDigger (Disturbs Substrate)Aggressive to same species/look-alikes
Popondetta Blue-eye
Nano / Bite-sized (Predation Risk)Hyperactive / Fast SwimmerJumper (Lid Required)
Stocking calculator

Can your tank handle Aequidens Jenaro Herrera and Popondetta 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.

Aequidens Jenaro Herrera
Popondetta Blue-eye
Test both in my tank

Behaviour & Temperament

Aequidens Jenaro Herrera is a moderately assertive species (5/10), while Popondetta Blue-eye is peaceful (1/10). This notable difference means Aequidens Jenaro Herrera may occasionally assert dominance over Popondetta Blue-eye.

Aequidens Jenaro Herrera and Popondetta Blue-eye 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.

There is a critical concern: the Piscivore (Eats small/nano fish) behaviour of one fish directly conflicts with the Nano / Bite-sized (Predation Risk) trait of the other β€” piscivorous fish will prey on nano-sized tank mates..

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

Water Parameters

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

Both fish can tolerate a pH between 7.2 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 8–12 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house Aequidens Jenaro Herrera and Popondetta Blue-eye together, plan for an aquarium of at least 200 litres with a minimum length of 120 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), Driftwood (Digestion/Hiding), Smooth Gravel (Sensitive Barbels), 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.

Suitable Tank Sizes

Standard aquarium sizes large enough for both Aequidens Jenaro Herrera and Popondetta Blue-eye.

Show 5 more tank sizes

Frequently Asked Questions

Can Aequidens Jenaro Herrera and Popondetta Blue-eye live together?

No. This combination is not recommended. Key incompatibilities β€” such as critical behavioural conflicts β€” make cohabitation unsafe.

What size tank do Aequidens Jenaro Herrera and Popondetta Blue-eye need?

A minimum of 200 litres (tank length at least 120 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 Aequidens Jenaro Herrera and Popondetta Blue-eye together?

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

Are Aequidens Jenaro Herrera or Popondetta Blue-eye aggressive?

Aequidens Jenaro Herrera is moderately assertive (5/10) and Popondetta Blue-eye is peaceful (1/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.

What pH do Aequidens Jenaro Herrera and Popondetta Blue-eye need?

Both species overlap in the 7.2–7.5 pH range. Consistency is key β€” avoid sudden swings, and test regularly to stay within this window.

How do I manage Aequidens Jenaro Herrera's territorial behaviour?

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


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