Red tail sicyopterus
Sicyopterus lagocephalus
Also known as Bichique, Red-tailed rabbit-head goby, Red tail goby
Care at a glance
- Temperature
- 73–81°F (23–27°C)
- pH
- 6.5–7.8
- Adult size
- 5.1 in (13 cm)
- Minimum tank
- 29 gal (110 L)
- Temperament
- Peaceful
- Social behavior
- Social
- Swim level
- Bottom
- Difficulty
- Difficult
- Breeding
- No record
- Rarity
- Common
- Origin
- Indo-Pacific island streams
- Family
- Oxudercidae
Overview
A big film-grazing goby that needs a genuine river tank rather than a nano. Keep it in 110 liters or more with heavy flow, mature stone and high oxygen; it rasps algae and biofilm off rock with a downturned mouth and needs enough surface to keep itself fed. Supplement with algae wafers and blanched vegetables. It climbs, so the tank needs a tight lid.
In the wild
Sicyopterus lagocephalus is one of the most widely distributed freshwater fish in the world, found in island streams across the Indo-Pacific from the western Indian Ocean to the central Pacific. Keep it at 23 to 27 degrees Celsius and pH 6.5 to 7.8, in fast water over stone.
Good to know
Sicyopterus lagocephalus reaches about 13 centimeters. Its enormous range comes from a long marine larval phase that lets it colonize island streams thousands of kilometers apart. Juveniles climb waterfalls using a pelvic sucker and a second grip formed by the mouth, moving upward in a series of holds.
Did you know
On Réunion its climbing fry are the bichique harvest, netted by the millions as they storm the river mouths.
Tank mates
Red tail sicyopterus is a peaceful, social species that keeps to the bottom. These picks match on water type, temperature, pH, size and temperament.

Twin-striped barb
Desmopuntius gemellusFreshwater3.5 in (9 cm)29 gal (110 L)73–82°F (23–28°C)
Sittaung danio
Danio sysphigmatusFreshwater3.3 in (8.5 cm)29 gal (110 L)72–81°F (22–27°C)
Niger yellow Congo tetra
Alestopetersius smykalaiFreshwater2.8 in (7 cm)29 gal (110 L)73–81°F (23–27°C)
Foersch's barb
Desmopuntius foerschiFreshwater3.1 in (8 cm)29 gal (110 L)73–82°F (23–28°C)
Borneo tiger barb
Puntigrus anchisporusFreshwater2.8 in (7 cm)29 gal (110 L)73–81°F (23–27°C)Dwarf synodontis
Microsynodontis batesiiFreshwater3.3 in (8.5 cm)29 gal (110 L)73–81°F (23–27°C)
Common questions
What size tank does a Red tail sicyopterus need?
A Red tail sicyopterus needs at least 29 gal (110 L). It spends most of its time in the bottom.
What temperature and pH do Red tail sicyopterus need?
Red tail sicyopterus are comfortable at 73–81°F (23–27°C) with a pH of 6.5–7.8.
How big do Red tail sicyopterus get?
An adult Red tail sicyopterus reaches about 5.1 in (13 cm).
Where to buy
Some links may not be the exact species or variety.
- Aquatic Arts Freshwater fish, shrimp and snails with an arrive-alive guarantee
- The Wet Spot Tropical Fish Large selection of quarantined tropical freshwater fish, with live arrival guarantee and Next Day Air flat rate shipping to all US locations
…or ask your local fish store.
Appears in
Freshwater fish · Gobies · Advanced fish · Community fish · Bottom dwellers
Keeping Red tail sicyopterus?
Track water tests, reminders and stocking fit.
Planning tankmates
See how Red tail sicyopterus fits a stocking plan. Open the stocking calculator
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Related species
Threadfin sicyopterus
Sicyopterus longifilisFreshwater3.9 in (10 cm)29 gal (110 L)73–81°F (23–27°C)Yellow fin rhinogobius
Rhinogobius leavelliFreshwater3.1 in (8 cm)14 gal (54 L)64–77°F (18–25°C)
Sharptail goby
Oligolepis acutipennisFreshwater5.9 in (15 cm)29 gal (110 L)75–82°F (24–28°C)
Mandarin rhinogobius
Rhinogobius brunneusFreshwater2.4 in (6 cm)14 gal (54 L)64–75°F (18–24°C)Caledonian red nose goby
Lentipes kaaeaFreshwater2.4 in (6 cm)14 gal (54 L)73–81°F (23–27°C)Chinese red ninja goby
Rhinogobius shennongensisFreshwater2.4 in (6 cm)14 gal (54 L)61–73°F (16–23°C)
