Steatogenys duidae
£85.99
Elephantnose Fish (Gnathonemus petersii) is a weakly electric African oddball for experienced keepers. It needs a mature aquarium with soft sand, subdued lighting, meaty foods and calm tank mates that will not outcompete it.
Bottom DwellerFishFreshwaterModerate CareOddball SpeciesPeacefulTropical Fish
Care at a Glance
Scientific Name
Gnathonemus petersii
Max Adult Size
up to 25 cm
Lifespan
10 years
Care Level
Advanced
Temperament
Peaceful with suitable tank mates; territorial toward its own kind
Temperature
23–28°C
pH Range
6–7.2
Hardness
2–15 dGH
Minimum Tank
255L
Diet
Worms, insect larvae, bloodworm, blackworm and other small meaty frozen or live foods
Adult size is the maximum length this species reaches at full maturity (scientific sources). The livestock you receive will be younger and smaller — pick a size above for the actual shipping size. Product-photo provenance and any image-specific limitations are stated on the listing.
Water Parameters
Temperature
23–28°C
23°CIdeal28°C
pH Level
6–7.2
6Ideal7.2
Water Hardness
2–15 dGH
2 dGHIdeal15 dGH
Gnathonemus petersii
Elephantnose Fish (Gnathonemus petersii) – 7–12cm & XL Sizes
Territorial
£35.99Sold Out
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Live arrival guaranteed. If they don’t arrive healthy, email us a short unboxing video the same day for a replacement or refund. Packed in oxygenated bags with insulation and heat packs when needed.
£19.95 tracked delivery — half price (£9.98) from £100.00, free from £200.00. One delivery charge however many fish you add — everything travels together with a licensed live-animal courier.
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Elephantnose Fish (Gnathonemus petersii) is a weakly electric African oddball for experienced keepers. It needs a mature aquarium with soft sand, subdued lighting, meaty foods and calm tank mates that will not outcompete it.
Bottom DwellerFishFreshwaterModerate CareOddball SpeciesPeacefulTropical Fish
Care at a Glance
Scientific Name
Gnathonemus petersii
Max Adult Size
up to 25 cm
Lifespan
10 years
Care Level
Advanced
Temperament
Peaceful with suitable tank mates; territorial toward its own kind
Temperature
23–28°C
pH Range
6–7.2
Hardness
2–15 dGH
Minimum Tank
255L
Diet
Worms, insect larvae, bloodworm, blackworm and other small meaty frozen or live foods
Adult size is the maximum length this species reaches at full maturity (scientific sources). The livestock you receive will be younger and smaller — pick a size above for the actual shipping size. Product-photo provenance and any image-specific limitations are stated on the listing.
Water Parameters
Maintain these water conditions for optimal health and vibrant colors
Temperature
23–28°C
23°CIdeal28°C
pH Level
6–7.2
6Ideal7.2
Water Hardness
2–15 dGH
2 dGHIdeal15 dGH
Elephantnose Fish (Gnathonemus petersii) is a weakly electric African mormyrid for experienced freshwater keepers. It is intelligent, nocturnal and bottom-foraging, with a sensitive chin appendage used to probe soft substrate for food.
This is not a beginner community fish. Long-term care needs a mature aquarium, soft sand, subdued cover, careful feeding and calm tank mates that will not bully it or outcompete it at feeding time.
Quick Facts
| Care level | Advanced |
|---|---|
| Adult size | About 18-25 cm |
| Minimum tank | 255 litres+ |
| Temperature | 23-28°C |
| pH | 6.0-7.2 |
| Hardness | 2-15 dGH |
| Temperament | Peaceful but territorial toward its own kind |
| Diet | Worms, insect larvae, bloodworm, blackworm and other meaty foods |
Care And Setup
Use soft sand, wood, roots, caves, plants and dim areas. Avoid sharp gravel because this species probes the bottom while feeding. Offer small meaty foods after lights dim and make sure it gets food before faster tank mates clear the aquarium.
Tank Mates
Suitable companions are calm, medium-sized species that occupy other areas of the tank. Consider Congo Tetra, Yellow-Tailed African Tetra, Feather-Fin Synodontis, Synodontis Petricola Pink or African Knifefish only in suitably large, carefully fed aquariums. Avoid aggressive cichlids and frantic feeders.
Why Buy From Tropical Fish Co?
Order with clear advanced-care notes, our Live Arrival Guarantee and dispatch by licensed live-animal courier.
Customer Reviews
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What customers say about ordering from us
4.6 on Google Maps, rated 4.6 out of 5 (opens in a new tab)4.4 · 91 shop reviews read them, rated 4.4 out of 5
- 4 out of 5Verified buyer
I have a small group of long finned mountain minnows. So was delighted to be able to order ten of this variety to increase the genetics in my tank . The ones I recieved are healthy but it’s to early to give a verdict on wether they are of a long finned type since they are small currently.
Gordon Walker · 23 Sept 2026
- 5 out of 5Verified buyer
100% success travel and "installation". Pleased with quality of purchase. The Siamese fighter a bit "shy" so have not yet seen him at his best yet but looking good. Happy customer. GG
George E Garratt · 21 Sept 2026
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