A remarkably adaptable and beautifully colored sleeper goby (not a true goby) native to Australia and New Guinea. They inhabit both pure freshwater streams and brackish estuaries. While generally peaceful and excellent community fish, they are micropredators that will happily consume dwarf shrimp and very small fry.
Empire Gudgeon At a Glance
Empire Gudgeon Tank Requirements
Will Empire Gudgeon fit in your tank?
Care guides tell you what Empire Gudgeon needs, the next question is whether your tank can safely provide it. Test Empire Gudgeon against your tank size, maintenance needs, and the fish you already keep before you buy.
Useful setup supplies
We may earn from qualifying purchases
Empire Gudgeon Water Parameters
Water care products
We may earn from qualifying purchases
Empire Gudgeon Temperament & Compatibility
Empire Gudgeon Varieties
Each variety inherits the species defaults above. Only differences are highlighted.
Standard / Unsexed
Juveniles or unsexed individuals commonly sold in stores. They display a subtle, earthy, silvery-brown coloration before reaching sexual maturity.
Differs in 1 trait from base species
Also known as: Juvenile
Male
Mature males develop spectacular, vibrant red, orange, and black bands on their dorsal and anal fins, especially when displaying to females or rival males. Mildly territorial with other males.
Differs in 2 traits from base species
Also known as: Breeding Male, Show Male
Female
Slightly smaller than males and maintains a more cryptic, silvery-brown coloration year-round. Highly peaceful and can be kept in groups to diffuse male attention.
Differs in 2 traits from base species
Also known as: Female Gudgeon
Empire Gudgeon Care Guide Summary
The Empire Gudgeon, scientifically known as Hypseleotris compressa, belongs to the Gobies & Gudgeons family group. Adults reach a maximum size of approximately 12 cm and have a compressed body shape with a moderate growth rate. Classified as mostly peaceful, this species primarily occupies the mid-level and bottom zones of the aquarium and produces a low level of biological waste.
To thrive, the Empire Gudgeon requires a brackish tolerant aquarium with a minimum volume of 110 litres and a tank length of at least 90 cm. Water temperature should be maintained between 20°C and 28°C, with a pH range of 6.5–8.5 and a general hardness of 5–20 dGH. A moderate water flow is preferred.
Due to its specialist needs, the Empire Gudgeon is best suited for fishkeepers who can provide a carefully planned setup. This species is available in 3 varieties: Standard / Unsexed, Male, and Female. Each may differ slightly in size, temperament, or care needs, so it is worth checking the specific requirements of the variety you plan to keep.
Empire Gudgeon Habitat Setup
When setting up an aquarium for the Empire Gudgeon, a moderate water flow best suits their natural preferences. Because this species occupies the mid-level and bottom zones, the aquarium layout should prioritise open swimming space in the centre of the tank for free movement and sufficient floor space with hiding spots among rocks, wood, or dense planting. Useful additions include a sand substrate to accommodate their sifting behaviour, driftwood, which can serve as both a hiding place and a dietary supplement, and dense planting to provide cover, break sightlines, and reduce stress. Keepers should note that a tight-fitting lid is essential, as this species is a known jumper.
Empire Gudgeon Compatibility Notes
Classified as mostly peaceful, the Empire Gudgeon is adaptable and can be kept singly or in a small group, offering flexibility when planning a community tank. When choosing tankmates, ornamental shrimp are not safe companions and their energetic swimming style may stress more sedentary or timid species. Selecting tankmates that favour different water layers from the mid-level and bottom zones can help reduce competition and territorial overlap.
Empire Gudgeon Recommended Tank Sizes
Standard aquarium sizes that meet the minimum volume and length requirements for Empire Gudgeon.
30 Gallon Breeder
40 Gallon Breeder
55 Gallon Standard
60 Gallon Breeder
75 Gallon Standard
90 Gallon Standard
Show 10 more tank sizes
Empire Gudgeon Feeding & Diet Considerations
The Empire Gudgeon will hunt and eat ornamental shrimp, making it unsuitable for shrimp-focused setups and will eat fry, so breeding efforts in the same tank are unlikely to succeed.
Feeding products
We may earn from qualifying purchases
.webp?2026-04-25T14%3A35%3A38.022Z)
Frequently Asked Questions About Empire Gudgeon
How big does Empire Gudgeon get?
Empire Gudgeon (Hypseleotris compressa) typically reaches a maximum adult size of approximately 12 cm. They have a compressed body shape and a moderate growth rate.
What tank size does Empire Gudgeon need?
A minimum aquarium volume of 110 litres and a tank length of at least 90 cm are recommended for Empire Gudgeon. This ensures enough swimming space and helps maintain stable water conditions.
What water parameters does Empire Gudgeon need?
Empire Gudgeon thrives in brackish tolerant conditions with a temperature range of 20–28°C, a pH between 6.5 and 8.5, and a general hardness of 5–20 dGH. A moderate water flow is preferred.
Is Empire Gudgeon peaceful or aggressive?
Empire Gudgeon is classified as mostly peaceful with an aggression score of 3 out of 10. They are generally well-suited to peaceful community tanks.
Can Empire Gudgeon live alone?
Yes, Empire Gudgeon can be kept singly or in a group. They are flexible and adapt well to both setups.
Is Empire Gudgeon safe with shrimp?
No. Empire Gudgeon is known to eat ornamental shrimp and is not recommended for shrimp tanks. Even larger shrimp species like Amano Shrimp may be at risk.
Does Empire Gudgeon have any special tank requirements?
Yes. Empire Gudgeon benefits from plants - densely covered, driftwood (digestion/hiding), and sand (sifters) in the aquarium. These features help replicate their natural habitat and promote overall health and well-being.
Does Empire Gudgeon need a lid on the tank?
Yes. Empire Gudgeon is a known jumper, and a tight-fitting lid or cover is essential to prevent escape. Even a small gap can be enough for a determined fish to leap out.
Top Tank Mates for Empire Gudgeon
These fish are strong compatibility matches for Empire Gudgeon based on water preferences, temperament, adult size, and tank behavior.
Celebes Halfbeak
Nomorhamphus liemi
Ideal Tank MatesWrestling Halfbeak
Dermogenys pusilla
Ideal Tank MatesParkinson's Rainbowfish
Melanotaenia parkinsoni
Ideal Tank MatesOgilby's Rainbowfish
Melanotaenia ogilbyi
Ideal Tank MatesPacific Sturgeon
Acipenser transmontanus
Ideal Tank MatesNorthern Mountain Swordtail
Xiphophorus nezahualcoyotl
Ideal Tank MatesPlants That Suit Empire Gudgeon
These plants pair well with Empire Gudgeon based on shared water preferences, layout fit, and how likely they are to hold up in the same aquarium.
Afzel's Anubias
Anubias afzelii
Amazon Sword
Echinodorus amazonicus
Anacharis
Egeria densa
Anubias Barteri
Anubias barteri
Baby Tears
Lindernia rotundifolia
Balansae
Cryptocoryne crispatula
Fish Similar to Empire Gudgeon
Peacock Gudgeon
Tateurndina ocellicauda
A stunning, peaceful freshwater sleeper goby from Papua New Guinea. Known for their vibrant blue, red, and yellow colors, they are excellent nano-tank inhabitants. They are not true gobies (they lack fused pelvic fins) and are exclusively freshwater. They prefer slow-moving water, dense vegetation, and small caves (like PVC pipes or smooth stones) for spawning.
Purple Spotted Gudgeon
Mogurnda adspersa
A stunning, robust Australian native fish known for its dark chocolate hues and vivid red, blue, and purple spots. Found in slow-moving creeks and billabongs, they are ambush predators. While generally peaceful with similarly sized or larger tank mates, they will eat any fish or invertebrate that fits into their surprisingly large mouths. They are capable jumpers and require a tight-fitting lid.
Knight Goby
Stigmatogobius sadanundio
A distinct, high-bodied goby found in estuaries across South Asia. Unlike most bottom-dwelling gobies, the Knight Goby frequently hovers in the water column. While often sold as freshwater fish, they thrive best in slightly brackish water (SG 1.003-1.005) or very hard, alkaline freshwater. They are territorial and notorious fin-nippers, making them poor tankmates for Guppies or Bettas.
Abei Puffer
Pao abei
A highly intelligent, interactive, and aggressive freshwater pufferfish native to the Mekong basin. They feature an earthy base color speckled with bright orange or pale spots. As true ambush predators and molluscivores, they require hard-shelled foods like snails and crustaceans to naturally file down their ever-growing teeth. Due to their extreme territoriality and formidable bite, they are widely considered a 'wet pet' and must be kept strictly alone.
Neon Blue Goby
Stiphodon atropurpureus
A stunning, specialized freshwater goby native to fast-flowing hill streams in Asia. Males display brilliant neon blue metallic coloration, while females are striped. They are specialized biofilm grazers ('Aufwuchs' eaters) and require mature tanks with established algae/biofilm stones. They are obligate stream dwellers requiring high oxygen and strong flow.
Freshwater Sole
Brachirus selheimi
A rare and captivating bottom-dwelling flatfish native to Australia and New Guinea. As an ambush predator, it spends most of its time completely buried in fine sand, waiting to strike at small fish or crustaceans. It absolutely requires a soft sand substrate to thrive and prevent severe abrasions to its delicate underside.