Flora & Fauna

Assassin snails are the go-to solution for controlling pest snail infestations in freshwater aquariums. They hunt and consume other snails methodically, and will also scavenge meaty foods. They breed slowly and do not typically overrun a tank like pest species do.

Axelrodi corydoras is a small, pinkish-bodied species with a bold dark lateral stripe and dark dorsal saddle markings. It is less commonly seen in the hobby than many species but is a peaceful, undemanding corydoras suitable for community planted tanks. A lovely species for those wanting something a little different.

A compact, small-leaved Bacopa from southern Brazil, producing round to oval light-green leaves on reddish stems. Grows slower and stays shorter than B. caroliniana, making it better suited to midground placement or smaller tanks. Under high light, the stems take on a reddish-orange tint that adds warmth to the scape. One of the most beginner-friendly stem plants available — it rarely melts and grows reliably even without CO₂.

A larger-leaved Bacopa with attractive, broadly oval leaves. Under high light, the foliage develops a beautiful pinkish-purple coloration that makes it a standout mid-ground or background accent. More colourful than B. monnieri and responds well to fertilisation.

Bamboo shrimp (wood shrimp) are large, striking filter-feeding shrimp that fan tiny food particles from the water current. They require good water flow and consistent, fine suspended food (like powdered spirulina). Do not keep with aggressive tankmates.

The banana plant is named for its distinctive cluster of banana-shaped storage roots at the base. It sends up floating leaves and white flowers when mature. It is an unusual, undemanding midground plant that does not require substrate planting — it can float freely.

The bandit corydoras is named for its distinctive black mask across the eyes and a black patch at the dorsal fin base, giving it a masked outlaw appearance. It is a peaceful, active species that thrives in soft, slightly acidic water.

Caridina cantonensis is the base species from which the famous Crystal Red, Crystal Black, and Tiger Bee shrimp have been selectively bred. Wild-type specimens display variable banding of white and translucent to brown, but it is the domesticated varieties that drive the hobby's fascination. All variants require the same exacting soft, acidic water conditions with very low TDS, and are intolerant of copper, fluctuating parameters, or high nitrates.

Dense, dark grey-to-black tufts that cling stubbornly to plants, hardscape, and equipment. One of the most frustrating nuisance algaes for planted tank keepers. Caused by CO₂ fluctuation and low or inconsistent carbon dioxide levels. Spot-treat with liquid carbon (Excel) or hydrogen peroxide.

Jet-black fish with two white bands on its tail. Generates a weak electric field to navigate and communicate. Nocturnal, shy, and sensitive to water quality. Grows large.

A dark variety produced by the dark gene, expressing as a near-black body with intricate lace-like patterning on the fins. Striking against light-coloured substrates and green plants. Bred from the silver base morph with additional dark gene copies for deeper colouration.

The black neon tetra has a distinctive two-tone horizontal stripe — iridescent white-green above a solid black band. Subtler than its neon cousin but equally elegant, it thrives in large schools in soft, acidic planted tanks and is very peaceful.

Deep black to dark charcoal Neocaridina. Full opaque black coloration is the most sought-after grade. Creates a dramatic contrast in light-substrate planted tanks. As hardy as red cherry shrimp.

The black skirt tetra has a distinctive deep body with flowing black dorsal and anal fins. It is extremely hardy and adaptable, making it a classic beginner fish. Long-finned and balloon variants are widely available in the hobby.

Bladder Snails are small, sinistral (left-coiled) freshwater snails with translucent amber shells, often introduced accidentally with plant purchases. They are voracious detritivores and algae grazers that help clean up uneaten food and decaying plant matter, contributing to tank cleanliness. Population explosions occur with overfeeding; controlled feeding keeps numbers in check. They serve as an excellent food source for pea puffers and assassin snails.

Dense, rough-textured mats of dark green filaments that blanket pond plants and surfaces. Common in outdoor ponds and highly nutrient-rich tanks. More coarse and branched than soft hair algae. Difficult to eradicate fully — physically remove as much as possible before treating with algaecide or reducing nutrients aggressively.

Named for the vivid red spot on the chest that resembles a bleeding heart, this is one of the larger and more impressive tetras. Males develop long, flowing dorsal and anal fins and a deeper body as they mature. Despite its size, it is a peaceful community fish that looks spectacular in large schools in planted or natural-style aquariums.

Eyeless cave-dwelling form of the Mexican tetra. Navigates entirely by lateral line. Surprisingly active and hardy — a fascinating conversation piece in any community tank.

Bloody Mary Shrimp are a deeply coloured Neocaridina davidi morph with an intense, translucent blood-red coloration that differs from the opaque red of Painted Fire Red or regular Cherry Shrimp — the red pigmentation is visible through the body, giving them a vivid, glowing quality. They are as hardy and easy to breed as other Neocaridina morphs, making them accessible for beginners seeking a striking red shrimp variety.

Blue bolt shrimp are a selectively bred Caridina variety featuring a striking white body with vivid blue patches. They require the same pristine, soft, acidic water as other Taiwan bee shrimp. Their dramatic colouration makes them highly sought after by advanced hobbyists.

Blue Dream Shrimp are a high-grade selectively bred Neocaridina davidi morph displaying deep, solid cobalt-blue coloration throughout the body. The 'Dream' grade represents the most intense and uniform blue coloration, without the lighter patches seen in standard Blue Velvet morphs. They share the same hardy, beginner-friendly care requirements as Red Cherry Shrimp and breed prolifically in stable, planted tanks.

Deep blue-grey form of the popular mystery snail. Strikingly beautiful against light sand or green plants. Active grazer of algae, uneaten food and detritus. One of the most popular planted tank snails.

Deep blue tiger shrimp with dark stripes. Requires the same soft, acidic water as other Caridina. The royal blue coloration is highly prized among shrimp keepers.

Blue velvet shrimp are a striking blue morph of Neocaridina davidi with a rich, opaque cornflower-blue colouration. Like all Neocaridina they are hardy and adaptable, making them an excellent choice for beginners wanting colourful shrimp.

Blue velvet shrimp are a selectively bred colour morph of the common neocaridina davidi, displaying an attractive solid blue coloration. They share the same hardy nature and care requirements as red cherry shrimp, making them equally beginner-friendly. They breed readily and can produce mixed-colour offspring if kept with other neocaridina colour morphs.

A blue-green or red-brown slime that coats the substrate, plants, and glass with a slimy, foul-smelling mat. Technically a bacterium, not true algae. Caused by low nitrates, poor flow, and organic waste. Responds to a 3-day blackout combined with the antibiotic erythromycin or hydrogen peroxide treatment.

Annual killifish with extraordinary colours — electric blue body with vivid red markings. Short-lived (under 1 year) but spectacular. Eggs are buried in peat and dry-stored.

Blyxa Japonica is an elegant plant that produces rosettes of narrow, grass-like leaves with a slightly golden-green hue. It does not spread by runners but instead produces daughter plants around the mother. Under good light and CO2 it takes on olive-golden tones that complement red and green stem plants beautifully. A staple in Nature Aquarium style.

One of the most colourful freshwater fish, the boesemani rainbowfish sports a vivid split colouration — bright blue-purple on the front half and yellow-orange on the rear. Males colour up fully in well-maintained tanks with varied diet and good water quality.

The Bolivian Ram is a hardier, more forgiving alternative to the German Blue Ram, tolerating a wider temperature range and less pristine water conditions without sacrificing its attractive appearance. It displays a golden-tan body, red-tipped fins, and an elongated dorsal fin with black and yellow banding. Pairs form monogamous bonds and exhibit fascinating parental care when breeding, making them rewarding to keep.

Popular carpet plant forming a dense lawn of short, narrow blades. Grows slowly without CO2 but rewards patience. Spreads via runners — plant individual blades 1cm apart for the fastest carpet.