Golden Basslet
Gramma dejongi
Also known as Cuban Basslet, Golden Cuban Basslet, Dejong's Basslet
Care at a glance
- Temperature
- 75–81°F (24–27°C)
- pH
- 8.1–8.4
- Adult size
- 2.8 in (7 cm)
- Minimum tank
- 29 gal (110 L)
- Temperament
- Mostly peaceful
- Social behavior
- Solitary
- Swim level
- Middle
- Difficulty
- Easy
- Breeding
- Medium
- Rarity
- Very rare
- Reef safe
- Reef safe
- Origin
- Southern Cuba, Caribbean
- Family
- Grammatidae
Overview
Care is essentially royal gramma care: a hardy, cave-oriented carnivore that takes mysis, enriched brine, and quality frozen foods without fuss. It is peaceful toward unrelated tankmates but defends its chosen crevice against similar-looking fish, so keep one per tank. Fully reef safe, ignoring corals and ornamental invertebrates.
In the wild
Found only on reefs off southern Cuba, where it lives in caves and under ledges on steep walls, often below common diving depths. Like its relatives it hugs the rock and orients its belly to the nearest surface rather than to gravity. Give it live rock with dark nooks and it will pick a home cave quickly.
Good to know
Gramma dejongi is a small basslet in the family Grammatidae, described in 2010 and reaching about 7 cm. The trade embargo keeps wild Cuban fish out of most markets, so nearly every fish available is captive bred and prices stay high. It spawns in rock crevices with the male tending the nest, much like the royal gramma.
Did you know
It was described only in 2010 from Cuban reefs, and genetic studies since then place it extremely close to the royal gramma, close enough that some researchers treat it as a golden offshoot of that species.
Tank mates
Golden Basslet is a mostly peaceful, solitary species that keeps to the middle. These picks match on water type, temperature, pH, size and temperament.

Pearly Jawfish
Opistognathus aurifronsSaltwater3.9 in (10 cm)29 gal (110 L)73–81°F (23–27°C)
Clark's Clownfish
Amphiprion clarkiiSaltwater5.5 in (14 cm)30 gal (115 L)75–82°F (24–28°C)
Pajama Cardinalfish
Sphaeramia nematopteraSaltwater3.1 in (8 cm)29 gal (110 L)72–81°F (22–27°C)
Zebra Dartfish
Ptereleotris zebraSaltwater4.7 in (12 cm)29 gal (110 L)72–79°F (22–26°C)
Green Chromis
Chromis viridisSaltwater3.1 in (8 cm)30 gal (115 L)75–82°F (24–28°C)Randall's Assessor
Assessor randalliSaltwater3.1 in (8 cm)29 gal (110 L)73–81°F (23–27°C)
Common questions
What size tank does a Golden Basslet need?
A Golden Basslet needs at least 29 gal (110 L). It spends most of its time in the middle.
What temperature and pH do Golden Basslet need?
Golden Basslet are comfortable at 75–81°F (24–27°C) with a pH of 8.1–8.4.
How big do Golden Basslet get?
An adult Golden Basslet reaches about 2.8 in (7 cm).
Where to buy
Some links may not be the exact species or variety.
…or ask your local fish store.
Appears in
Saltwater fish · Beginner fish · Reef-safe fish · Beginner saltwater fish
Keeping Golden Basslet?
Track water tests, reminders and stocking fit.
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Related species

Royal Gramma
Gramma loretoSaltwater3.1 in (8 cm)29 gal (110 L)72–81°F (22–27°C)
Blackcap Basslet
Gramma melacaraSaltwater3.9 in (10 cm)29 gal (110 L)72–81°F (22–27°C)
Brazilian Gramma
Gramma brasiliensisSaltwater3.5 in (9 cm)40 gal (150 L)73–81°F (23–27°C)
Azure Damsel
Chrysiptera hemicyaneaSaltwater2.8 in (7 cm)29 gal (110 L)75–81°F (24–27°C)
Yellowtail Demoiselle
Neopomacentrus azysronSaltwater3 in (7.5 cm)50 gal (190 L)75–81°F (24–27°C)Indigo Dottyback
Pseudochromis hybridSaltwater3 in (7.5 cm)29 gal (110 L)73–81°F (23–27°C)
