SKU: 53944526717

Threadfin Rainbow Fish Iriatherina Werneri 5cm

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Description

Threadfin Rainbow Fish Iriatherina Werneri 5cmThreadfin Rainbow Fish Iriatherina Werneri The Threadfin Rainbowfish was scientifically described by Meinken in 1974 and given the name Iriatherina werneri. The species was discovered in an irrigation ditch in Western New Guinea (formerly known as Irian Jaya). It entered the European aquarium hobby in 1974, but in those early days only males were offered. Today, you can find both sexes in the aquarium trade and the species is bred in aquariums.

Threadfin Rainbow Fish Iriatherina Werneri

The Threadfin Rainbowfish was scientifically described by Meinken in 1974 and given the name Iriatherina werneri. The species was discovered in an irrigation ditch in Western New Guinea (formerly known as Irian Jaya). It entered the European aquarium hobby in 1974, but in those early days only males were offered. Today, you can find both sexes in the aquarium trade and the species is bred in aquariums.

Description
The Threadfin Rainbowfish is will normally stay below 4 cm (1 ¬Ω inch) in length. The body is brownish with silvery reflections. The populations found in New Guinea are somewhat darker than their Australian counterparts.

Both sexes are darker on the backs, but it is especially noticeable in males. The male fish will also develop thread-like filaments and it is these elongated filaments that have given the species its common name. The male is also more colourful and it is common for Threadfin Rainbowfish males to have a yellow or red first dorsal fin and red or reddish caudal fin lobes.

Geographical distribution, habitat and conservation
The Threadfin Rainbowfish in found in south-central New Guinea and the Cape York Peninsula, Australia. It lives in slow flowing streams, ditches, billabongs, swamps and swampy lagoons. All these habitats are filled with dense aquatic vegetation, including floating plants that shadow the water and provide shelter for fish. The species is not included in the IUCN Red List of Threatened Species.

Keeping ThreadfinRainbowfish in aquariums

If you manage to nurse your Threadfin Rainbowfish back to health when it has been exposed to transport and new unfamiliar conditions, it can become quite an easy species to care for in the aquarium. Keep the water temperature, pH-value and water hardness stable and do not carry out large water changes; small and frequent water changes are much better for this fish. The recommended temperature range is 25-28 degrees C (77-82 degrees F) and the pH-value should be 6.0-7.5. Some populations of Threadfin's live in even more acidic conditions in the wild, such as the Cape York population which is used to a pH-value down to 5.5.

Try to mimic the natural habitat of the Threadfin Rainbowfish when you set up the aquarium and include a lot of plants. The small and friendly Threadfin Rainbowfish is normally kept in species aquarium or together with other species of rainbowfish.

Breeding ThreadfinRainbowfish
The Threadfin Rainbowfish is fairly easy to breed. (For sexing guidelines, se the “Description” section above.) If you want to breed Threadfin Rainbowfish you must of course keep it in optimal conditions and make sure that it is healthy and happy in the aquarium. You should also provide the fish with bushy plants like java moss or include a few spawning mops in the setup. Live food is known to promote spawning; you can for instance grow your own brine shrimp and daphnia.

The male Threadfin Rainbowfish will court the female by displaying in front of her. He will extend his first dorsal and anal fins and “flick” them to look more impressive. During the actually spawning, the female will release tiny eggs that will stick to a plant or spawning mop. The safest course of action is normally to move the plant/mop to a separate fry rearing aquarium to avoid predation. It is very important to keep the water quality up in the fry rearing aquarium, because the fry are quite sensitive. You can feed the fry egg yolk or infusoria until they are large enough to accept newly hatched brine shrimp.
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SKU: 53944526717

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4.4 ★★★★★
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Nick Papagiorgio
Boise, US
★★★★★ 3
A bit iffy on these plates
Color: Brown, Size: 9 in - 75 count, Color: Brown, Size: 9 in - 75 count
These plates are ok, but certainly not the best I've found. On the positive side, they are what I'd consider "Lunch Size" an are somewhat sturdy. They'll hold a sandwich and chips with little effort so, as a plate, they do... plate. Where I am a bit hesitant is in their molding an construction. You can see in my photos that there is significant staining/watermarking on the plates from the manufacturing process. This could be simply from the way the wet pulp was extruded and formed, but it honestly gives me a bit of the ick. Not that it's particularly gross, but it does make me wonder how sanitary the plates are or what binders might be leeching into my food. In my last photo, you can see a comparison to a compostable plate that I really like. The finish is cleaner and the mold included an inner ridge which gives the plate more stability - making it less likely to flex under weight. Both are sugar cane fiber plates and my preferred plate is a few dollars more expensive for a comparable pack, but the clean appearance and extra rigidity make it worth the added spend in my opinion. Ranking these 3-stars might lead some to think they're bad - and to be clear, I don't think they are. They're just adequate. If you're looking to save a few bucks on a compostable plate, these WILL get the job done. I would just shy away from using them with wet or acidic foods since they don't boast the highest quality of manufacture.
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Reviewed in the United States on March 12, 2026
A
Ai
Pawtucket, US
★★★★★ 4
Strong Eco Friendly Plates But Not Great For Hot Food
Color: Brown, Size: 9 in - 75 count
I picked these up because I wanted something more environmentally friendly than the usual plastic or paper stuff. They are made from bamboo and bagasse, and you get a good amount in the pack for the price. For dry stuff like snacks or sandwiches, they are super sturdy and do not bend at all when you pick them up. However, they do not hold up very well when you put hot or wet food on them. Even though they are supposed to be heavy duty, I noticed they can get a little soft if the food is really steaming. They are still perfect for a quick lunch or a party where you want an easy cleanup, but you might want to double them up if you are serving something heavy and hot. The plates are big, and you get quite a bit, making it a really good value overall.
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Reviewed in the United States on March 13, 2026
A
Annette
Dallas, US
★★★★★ 5
Heavy duty paper plates
Color: Brown, Size: 10 in - 75 count
These disposable plates are amazing. They're large enough to hold an entire Thanksgiving meal. They're sturdy and strong, and won't buckle even when supporting quite a lot of weight. They don't get soggy even when I deliberately poured water in them. The sides are built up to keep food from falling off the plate. These are everything you'd need in a disposable plate, and they're biodegradable, too! These are ideal for barbeques or outdoor entertaining, or even for everyday use in the kitchen.
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Reviewed in the United States on March 16, 2026
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Amazon Customer
Birmingham, US
★★★★★ 5
Compostable Paper Plates
Color: Brown, Size: 9 in - 75 count
I ordered these because I like using paper plates and wanted to see if the compostable ones were strong enough for regular use. They're sturdier than regular paper plates due to the increased thickness of these. I've put heavy food on them like ribs and sides and they haven't bent under the weight. They feel more like pressed cardboard than paper and hold up through a full meal without getting soft. The brown color is a little utilitarian looking but that doesn't really matter for what they are. I guess I wouldn't use them for a party or something fun like that. They stack neatly and take up about the same space as regular paper plates.
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Reviewed in the United States on March 10, 2026
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Happydays_5678
Bozeman, US
★★★★★ 5
Nice and sturdy
Color: Brown, Size: 10 in - 75 count
These are nice. Very sturdy. The size described. They don't fall apart while using. I would recommend.
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Reviewed in the United States on March 19, 2026

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