Max Size: 15cm

Blue Spotted Hill Trout (Barilius bakeri)

The Blue Spotted Hill Trout, Barilius bakeri is unsuitable for the general community aquarium, mainly because of its environmental demands and because it is a swift swimmer and vigorous feeder that will outdo and intimidate slower and less assertive species at feeding times. In addition, it would help to exclude much smaller fish as they may predate them.

These fish do best with similarly-sized, robust, and competitive cyprinid tankmates.

The Blue Spotted Hill Trout is unsuitable for the beginner aquarist because they are intolerant of organic waste accumulation and require pristine water. They will also fair better if there is a moderate degree of water movement and a high dissolved oxygen balance.


Blue Spotted Hill Trout
Blue Spotted Hill Trout
Blue Spotted Hill Trout
Blue Spotted Hill Trout
Quick Facts
Scientific NameBarilius bakeri
Other NamesRoyal Danio, Blue-dotted Mirror Fish
Aquarium LevelMiddle - Top
DifficultyIntermediate - Advanced
Best kept asGroups 5+
Lifespanup to 10 years
Water Parameters
Water TypeFreshwater
PH6.0 - 7.5
GH2 - 10
TDS18 - 179
64 - 79℉
17.8 - 26.1℃


In the home aquarium, the Blue Spotted Hill Trout will readily accept most good quality dried foods such as granules, flakes and sinking pellets. These modern food products have been developed to provide all adequate nutrition to maintain your fish's health and dietary requirements.

Providing additional foodstuffs such as live, frozen, and freeze-dried meals such as bloodworm, daphnia, and tubifex once or twice a week will provide additional benefits to your fish's health and well-being but is not a must for this fish.

It should be noted that bloodworms should only be given as an occasional treat and should not be used as the staple diet as they are difficult for fish to digest and can potentially cause blockages.

This fish is an omnivore in the wild, meaning it will consume some vegetable matter. Although most modern fish foods take this into account and include them in their products, you can still supplement your fish's diet with blanched vegetables such as spinach, broccoli, and zucchini. Ensure you do not overfeed your fish and remove any leftovers the following day.

Tank Mates

2 interesting tank mate ideas for the Blue Spotted Hill Trout could include:

Mascara Barb(Dawkinsia Assimilis)
Saddleback Loach(Homaloptera Orthogoniata)

Sexual Dimorphism

As far as the Blue Spotted Hill Trout is concerned, its sexes can be readily distinguished. A female's body is generally thicker and not as vividly coloured as a male's, especially when carrying eggs. Males, however, develop tubercules on their heads when courting, and their lower bodies are orange in colour.

Frequently asked questions

Are Blue Spotted Hill trouts a shoaling fish?

Although the Blue Spotted Hill trout is gregarious by nature, they are a shoaling species rather than a schooling species that develop a distinct pecking order. Therefore, you should always maintain these fish in groups of five or more individuals. If you only purchase two or three of these fish, the subdominant individuals may be bullied continually, and single specimens can become aggressive towards similar-looking species.

Can you house Blue Spotted Hill trouts in a community tank?

Unfortunately, Blue Spotted Hill Trout are not well suited to most community aquariums. It can grow up to 13cm in length, is a swift swimmer, a voracious feeder, and may predate on smaller tankmates. Therefore, only similarly competitive fish should be considered tank mates. Additionally, this species requires high oxygen levels and no organic waste, making them unsuitable for community aquariums.

What does the Blue Spotted Hill Trout look like?

Blue Spotted Hil Trouts have silvery-blue bodies with around ten darker, metallic-looking narrow bands or blotches on the flanks. The males have orange edges to their anal and caudal fins, whereas the females are white.

What should I feed my Blue Spotted Hill Trouts?

The Blue Spotted Hill Trout is predominantly a surface feeder consuming a mixture of terrestrial and aquatic insects. You can replace this with good quality dried food such as large flakes and pellets supplemented with regular live and frozen foods such as daphnia, bloodworm, chopped earthworm and artemia.

You may also give them fruit flies and small crickets, provided they are gut-loaded before use.

Where does the Blue Spotted Hill Trout originate?

Blue Spotted Hill Trout is endemic to the Western Ghats mountains in southwestern India. These fish inhabit low-to-medium gradient, moderate to fast-running streams and well-oxygenated rivers, with substrates of cobbles, gravel, large boulders and exposed bedrock.

Other Barbs of interest

African Banded Barb(Barbus fasciolatus)
Arulius Barb(Dawkinsia arulius, Puntius arulius)
Black Ruby Barb(Pethia nigrofasciata)
Borneo Red Fin Silver Shark(Cyclocheilichthys janthochir)
Butterfly Barb(Barbus hulstaerti)
Checker Barb(Oliotius oligolepis)
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Date Added: 30/10/2020 - Updated: 11/08/2022 01:01:27