Threadfin Rainbowfish - Planted Tank Mates

Threadfin Rainbowfish

2″ | 6 or more | 20 gal

PH 6 – 7.5 | Peaceful

Iriatherina werneri

Characteristics:

Max Size: 2″

Care Level: Easy

Behavior: Peaceful

Dwelling: Top of tank

Diet: Omnivore

Water Movement: Slow Moving

Parameters

Temperature: 72° – 82°

PH: 6 – 7.5

dGH: 4 – 15

dKH: 2 – 6

Tank Size: 20 gal

Grouping: 6

Tank Mates

 Cherry Barbs, Tetras, Rasboras, Danios, Dwarf Gouramis, Hatchetfish, Mollies, Guppies, Plecos, Dwarf Corydoras, Loaches, Otocinclus and even adult Dwarf Shrimp.

Notes

Threadfin / Featherfin Rainbowfish are generally shy top dwellers.  They’re very peaceful and do well with fish their size, or fish that won’t out compete them for food.  Provide an aquarium lid as they can get skittsh and jump.

Quick Comparison

Threadfin Rainbowfish removeBlue Star Endler removeThree-Spot Gourami removeDwarf Gourami removeKoi Betta removeSparkling Gourami remove
NameThreadfin Rainbowfish removeBlue Star Endler removeThree-Spot Gourami removeDwarf Gourami removeKoi Betta removeSparkling Gourami remove
ImageThreadfin rainbowfish (Iriatherina werneri).Blue star endler fish (Poecilia wingei).Three-spot gourami fish (Trichopodus trichopterus).Dwarf gourami fish (Trichogaster lalius).Koi betta fish (Betta splendens).Sparkling gourami fish (Trichopsis pumila).
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Description

2" | 6 or more | 20 gal

PH 6 - 7.5 | Peaceful

1.75" | 6 or more | 10 gal

PH 6.8-8 | Peaceful

5" | Single | 30 gal

PH 6-7.5 | Peaceful

3" | Single | 10 gal

PH 6-7.5 | Peaceful

3" | Single | 5 gal

PH 6.5-7.5 | Aggressive

1.5" | Single | 10 gal

PH 6-7 | Peaceful

Content

Iriatherina werneri

Characteristics:

Max Size: 2″

Care Level: Easy

Behavior: Peaceful

Dwelling: Top of tank

Diet: Omnivore

Water Movement: Slow Moving

Parameters

Temperature: 72° – 82°

PH: 6 – 7.5

dGH: 4 – 15

dKH: 2 – 6

Tank Size: 20 gal

Grouping: 6

Tank Mates

 Cherry Barbs, Tetras, Rasboras, Danios, Dwarf Gouramis, Hatchetfish, Mollies, Guppies, Plecos, Dwarf Corydoras, Loaches, Otocinclus and even adult Dwarf Shrimp.

Notes

Threadfin / Featherfin Rainbowfish are generally shy top dwellers.  They're very peaceful and do well with fish their size, or fish that won't out compete them for food.  Provide an aquarium lid as they can get skittsh and jump.

Poecilia wingei

Characteristics:

Max Size: 1.75″

Care Level: Easy

Behavior: Peaceful

Dwelling: Top of tank

Diet: Omnivore

Water Movement: Slow Moving

Parameters

Temperature: 68 – 82

PH: 6.8 – 8

dGH: 8 – 20

dKH: 4 – 8

Tank Size: 10 gal

Grouping: 6 or more

Tank Mates

Tetras, Rasboras, Danios, Hatchetfish, Guppies, Mollies, Dwarf Gourami, Angelfish, Plecors, Loaches and Otocinclus

Notes

Endlers are unique with distinctive color splotches and markings.  Similar to guppies, Endlers are also relatively hardy and popular fish. Many beginners keep them with great success.

Breeding

They generally breed in warmer waters.  They can also reproduce with guppies, so be careful with mixing because they will become hybrids.  Keep a ratio of 1:2, male : female.

Trichopodus trichopterus var. Three-Spot

Characteristics:

Max Size: 5″

Care Level: Intermediate

Behavior: Peaceful

Dwelling: Middle to Top of tank

Diet: Omnivore

Water Movement: Slow Moving

Parameters

Temperature: 72 – 82

PH: 6 - 7.5

dGH: 4 - 15

dKH: 3 – 8

Tank Size: 30 gal

Grouping: 1, or 6+

Tank Mates

Larger nano community fish like large tetras, rasboras, peaceful barbs, Tinfoil Barbs that dwell at the middle of the tank

Slightly smaller or equal in size fish such as dwarf cichlids, German Blue Rams, Apistogramma Larger bottom feeders like loaches, corydoras, Siamese Algae Eaters Avoid fin nipping fish

Notes

Three-Spot Gouramis are recognized by the two spots on their body and the 3rd suggestive spot being their eye.  They're a color variation from the same Trichopodus trichopterus species as the Opaline Gourami, Blue Gourami, Gold Gourami and Lavendar Gourami.

Keep as a single feature fish, or as a male & female pair.  They're generally peaceful community fish but can become semi-aggressive towards each other, especially males.  When in groups, keep 1 male to every 3 female ratio.

Trichogaster Ialius

Characteristics:

Max Size: 3″

Care Level: Easy

Behavior: Peaceful

Dwelling: Middle to Top of tank

Diet: Omnivore

Water Movement: Slow Moving

Parameters

Temperature: 72 – 82

PH: 6 - 7.5

dGH: 4 - 15

dKH: 3 – 8

Tank Size: 10 gal

Grouping: 1, or 6+

Tank Mates

Most nano community fish like Tetras, Rasboras, Danios that dwell at the middle of the tank

Bottom feeders like loaches, corydoras, otocinclus, snails.  Adult shrimp OK, but smaller shrimp or fry can become snacks. Avoid fin nipping fish

Notes

Commonly known as Dwarf Gourami or by its scientific name Trichogaster Ialius, comes with iridescent, rainbow colors.  Keep as a single feature fish, or as a male & female pair.  They're generally peaceful community fish but can become semi-aggressive towards each other, especially males.  When in groups, keep 1 male to every 2-3 female ratio.

Betta spenden

Characteristics:

Max Size: 3″

Care Level: Easy

Behavior: Aggressive

Dwelling: Top of tank

Diet: Omnivore

Water Movement: Slow Moving

Parameters

Temperature: 76 – 82

PH: 6.5 - 7.5

dGH: 2 - 5

dKH: 1 – 4

Tank Size: 5 gal

Grouping: Single

Tank Mates

Peaceful mid-dwelling nano fish like ember tetras, harlequin rasboras, and celestial pearl danios, but keep them in strong groups

Bottom dwellers like Kuhli loaches, Corydoras, Malaysian Trumpet snails.  Depending on each individual betta, dwarf shrimp may or may not get eaten. Avoid other aggressive, fin-nipping or even colorful fish like tiger barbs and fancy guppies. Prevent stressing the betta by keeping top dwelling fish to a minimum. Avoid larger fish which can prey or intimidate like cichlids.

Notes

Koi Bettas are a type of Marble Betta but with coloration and patterns resembling a Japanese Koi Fish. There is no cross-breeding with an actual Koi carp.

Betta fish are also known as Siamese or Japanese Fighting Fish.  They're very territorial and should never be kept together unless for short-term breeding.  Despite their aggressive nature, they can have a curious and playful personality.  They'll often recognize their caretaker and will even come up to the glass to greet them.  The betta spenden species come in a variety of tail shapes, colors and patterns.  They're easily the show piece to any tank and their extravagant tails flow like living art.  Provide their space with a lot of plants, slow water agitation and warm waters to keep them healthy and active.

Regardless of what you see in retail stores or what people say, NEVER keep a betta in anything less than a 5 gallon tank. https://plantedtankmates.com/types-of-betta-fish/

Trichopsis Pumila

Characteristics:

Max Size: 1.5″

Care Level: Easy

Behavior: Peaceful

Dwelling: Middle to Top of tank

Diet: Omnivore

Water Movement: Slow Moving

Parameters

Temperature: 72 – 82

PH: 6 - 7

dGH: 4 - 8

dKH: 2 - 6

Tank Size: 10 gal

Grouping: 4 or more

Tank Mates

Caridina Shrimp, Amano Shrimp, Cardinal and Neon Tetras, Rasboras, Danios, Pygmy and Leopard Corydoras, Otocinclus

Notes

Unlike dwarf gouramis, Sparkling Gouramis are non-territorial towards one another and do OK in groups.

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