Can Aequidens Jenaro Herrera and Silver Hatchetfish Live Together?

Possible with Caution

Keeping Aequidens Jenaro Herrera and Silver Hatchetfish together is possible but requires caution due to differing aggression levels. Provide a spacious tank of at least 200 litres with plenty of hiding spots to reduce stress. Monitor behaviour closely, especially during the first few weeks.


At a Glance

Aequidens Jenaro Herrera

Aequidens sp. 'Jenaro Herrera'

Silver Hatchetfish

Gasteropelecus sternicla

🐠Family Group
Aequidens Jenaro Herrera
Cichlids - South American
Silver Hatchetfish
Characins
Temperament
Aequidens Jenaro Herrera
Semi-Aggressive (5/10)
Silver Hatchetfish
Peaceful (1/10)
Temperature
βœ“ Compatible
Aequidens Jenaro Herrera
24–28Β°C
Silver Hatchetfish
23–28Β°C
pH Range
βœ“ Compatible
Aequidens Jenaro Herrera
6–7.5
Silver Hatchetfish
6–7.5
Hardness (dGH)
βœ“ Compatible
Aequidens Jenaro Herrera
2–12
Silver Hatchetfish
2–12
Water Type
βœ“ Compatible
Aequidens Jenaro Herrera
Freshwater Only
Silver Hatchetfish
Freshwater Only
Flow Preference
βœ“ Compatible
Aequidens Jenaro Herrera
Moderate
Silver Hatchetfish
Moderate
Min Tank Volume
Combined: 200 L
Aequidens Jenaro Herrera
200 L
Silver Hatchetfish
75 L
Swimming Level
βœ“ Different zones
Aequidens Jenaro Herrera
MiddleBottom
Silver Hatchetfish
Top
🏷️Behavior Tags
Aequidens Jenaro Herrera
Territorial (Defends specific area)Piscivore (Eats small/nano fish)Fry PredatorDigger (Disturbs Substrate)Aggressive to same species/look-alikes
Silver Hatchetfish
Jumper (Lid Required)Shy / Slow Moving (Easily Stressed)Hyperactive / Fast Swimmer
Stocking calculator

Can your tank handle Aequidens Jenaro Herrera and Silver Hatchetfish?

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
Silver Hatchetfish
Test both in my tank

Behaviour & Temperament

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

In terms of spatial distribution, Aequidens Jenaro Herrera prefers the Middle (Open Water) and Bottom (Substrate) zones, whereas Silver Hatchetfish occupies the Top (Surface) zone. Because they use different levels of the water column, territorial disputes are less likely and the tank will appear more balanced.

Worth noting: Silver Hatchetfish is a known jumper, so a tight-fitting lid is essential.

To improve the chances of a peaceful coexistence in this community tank: Provide a significantly larger tank (at least 50% more volume than the minimum) to allow both Aequidens Jenaro Herrera and Silver Hatchetfish to establish separate territories. Add plenty of line-of-sight breaks using driftwood, rocks, and dense planting to reduce territorial confrontations. 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 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 6 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 2–12 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house Aequidens Jenaro Herrera and Silver Hatchetfish 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.

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

Specific environmental needs for this combination include: Sand (Sifters), Driftwood (Digestion/Hiding), Smooth Gravel (Sensitive Barbels), 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.

Suitable Tank Sizes

Standard aquarium sizes large enough for both Aequidens Jenaro Herrera and Silver Hatchetfish.

Show 5 more tank sizes

Frequently Asked Questions

Can Aequidens Jenaro Herrera and Silver Hatchetfish live together?

They can coexist, but the pairing requires careful monitoring. Provide ample space (at least 200 litres), plenty of hiding spots, and watch for signs of stress or aggression.

What size tank do Aequidens Jenaro Herrera and Silver Hatchetfish 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 Silver Hatchetfish 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 Silver Hatchetfish aggressive?

Aequidens Jenaro Herrera is moderately assertive (5/10) and Silver Hatchetfish 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 Silver Hatchetfish need?

Both species overlap in the 6–7.5 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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