Inspiration: Goldielopes!

This one’s for all the goldfish lovers out there! One of my favorite artists on Tumblr, Charli, recently came up with a wonderful new concept called Goldielopes. They’re small watercolor paintings of all kinds of (fancy) goldfish with deer antlers. What goldfish lover doesn’t want one of these hanging above their goldie tank? Too cute!

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You can order one of the original Goldielope pieces (but watch out, as new batches sell quickly!), but you can also contact Charli at to commission a Goldielope version of your own goldie.

Happy (goldfish) keeping!

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Nano fish for small tanks!

If you have a small aquarium, it can be pretty hard to find the right fish to stock it with. Most of the popular choices for smaller tanks – pygmy corydoras, dwarf puffers, clown killifish – should still be kept in at least around 10 gallons (40L) and are wrongly marketed towards smaller setups. So what choices does that leave us with? Keep reading for a list of the actual smallest of the smallest fish!

Note: Please do not keep fish in any aquarium smaller than 5 gallons. These extreme nano tanks cannot hold a stable cycle and you should only keep invertebrates with a small bioload in them. Please also do not keep more than one species of fish in a nano tank to prevent overcrowding. This list contains some suggestions for suitable invertebrates.

Boraras brigittae – Mosquito rasbora

Talk about tiny! At a maximum of 2 cm (0,8 inch), these schooling fish are ideal for nano setups. They come from the soft, dark waters of Borneo, which means a great opportunity to set up a mini blackwater habitat. Keep mosquito rasboras in larger groups (at least 7-8) in aquariums of at least around 6 gallons (23L) – a longer aquarium is preferred here, because although they are small these fish do love to swim a lot!
Note: Mosquito rasbora are not the only ultra tiny rasbora! If they’re available in your local aquarium store, you could also consider Continue reading

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Indian Almond Leaves | How and when to use them!

If you’re an aquarist, you’ve probably heard of Indian almond leaves (also known as Catappa leaves). These leaves of the Terminalia catappa tree are especially popular in the betta and shrimp hobby as a natural medicine and water conditioner. They are said to help combat fungus and bacterial problems like finrot, and prevent stress by mimicking the natural habitat. But how, when and why should you use them?

What are Indian almond leaves? As mentioned before, Indian almond leaves are the leaves of the Terminalia catappa tree, which grows in large parts of Asia. The leaves are usually harvested by simply picking them off the ground. After drying them, they are ready for use in the aquarium. You can import Indian almond leaves directly, but nowadays they are also available in some pet-/aquarium stores and online!

What do Indian almond leaves do? When placed in an aquarium, Indian almond leaves start slowly decomposing. While this happens they turn the water a yellow or brown color by releasing tannins. These tannins lower the pH and are said to have antifungal and antibacterial properties, which comes in very handy when you have a fish suffering from finrot or when you’re raising vulnerable fry. The dark color of the water is considered unsightly by some aquarists, but it actually mimics the natural habitat of many fish species! This definitely makes it something to consider embracing.

Continue reading

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Caresheet: Goldfish

Common goldfish are a long-time favorite as an easy first pet, which makes it extra surprising that they can’t actually be kept in the classic goldfish bowl. So what is a good home for our favorite orange friend? Keep reading for more info on how to keep goldfish, suitable pond mates, what to feed and how to breed them!

This is a caresheet for single tailed goldfish. If you were looking for more information on fancy (double tail) goldfish, check out the Fancy goldfish caresheet!
For more specific info on why goldfish should not be kept in bowls and small tanks, check out Why goldfish bowls should be banned!


goldfish by riviera2008 on Flickr.


Tank size 100 gal (380L) per fish
Temperament Peaceful
Diet Omnivore
Temperature Seasonal
pH 7-8


Carassius auratus, single tail goldfish. This includes common goldfish, comet goldfish, and shubunkin.

Natural habitat:

The goldfish as we know it does not naturally appear in the wild. Its ancestor, the Prussian carp, is mainly found in Asia.


Single tailed goldfish can be told apart from fancy goldfish by their tail (surprise, surprise), but also by their body shape. While some fancy goldfish types do have a single tail, they have a much rounder body than actual single tail goldfish.
Single tails come in almost all colors, including yellow, orange, green/brown, calico and white. They have a long, torpedo shaped body that is similar to that of the Prussian carp and can grow quite large; up to 12 inch (30 cm) is sometimes seen!

Determining the gender of a single tailed goldfish can be a challenge, especially when they’re kept in a pond. However, it’s not impossible! Most males Continue reading

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Aquarium snails you DO want in your tank!

Aquarium snails are pretty underappreciated and underrepresented on most aquarium websites. They’re usually seen as pests instead of an actual addition to your aquarium, which is a shame as there are tons of beautiful species available. Not all of them reproduce quickly, and most can actually help you out with algae control. Looking through the Aquariadise archives, I seem to be guilty as well. Not a single snail post! Time for snail representation – here’s a list of some beautiful and easy to keep snail species!

Sulawesi Snail (Tylomelania sp.) - I was always under the impression that anything from Sulawesi would be just as difficult to care for as Sulawesi shrimp – I was wrong. When kept at temperatures around 81-86 °F/27-30 °C with peaceful tankmates, Sulawesi snails are actually easy to keep, interesting to watch and beautiful! They are omnivoric, so feed herbivore foods like algae tablets and fresh veggies as well as foods meant for omnivores/carnivores. Tylomelania snails will breed in the aquarium without much difficulty, but most sources report one juvenile at a time. This means they won’t become pests like pond snails or trumpet snails!
You can buy Sulawesi snails online here!
More info about these snails can be found at Practical Fishkeeping!

Nerite Snail (Neritina sp.) – Freshwater nerites are among the most popular aquarium snails because of their Continue reading

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Caresheet: White Cloud Mountain Minnow

White Clouds are a unique fish. Although sold next to (and indeed physically similar to) the tropical tetras, they are actually a type of minnow able to withstand cold temperatures. Their docile nature and unique adaptability make them a great fish to keep in captivity.
This caresheet was written by the lovely Scalestails, Tumblr’s favorite pet expert!
Tank size 15 gal (57L)
Temperament Peaceful
Diet Carnivore
Temperature 60-72°F (15-22 °C)
pH 6.0-7.0
Length 1-2" (~3cm)

Name:  White Cloud Mountain Minnow (Tanichthys albonubes)

Lifespan: 4-5 years

Diet:  Micropredators feeding on small aquatic invertebrates. They will readily accept flakes, crisps, frozen foods (bloodworms, brine shrimp, daphnia, etc.) and freeze dried foods.

Appearance:  Typical torpedo shaped body. They have a a shine of iridescence running along their lateral line. Males have a splash of red on their slightly larger and rounder dorsal and caudal fins, and a bit on their mouth as well.

Sexing:  Females are slightly larger than males, lack the red coloration, and have rounder torsos. Males have that nicer coloration and can be seen displaying and sparring with other males.

Aggression Level and Social Characteristics:  These fish are very docile when kept correctly, making them excellent for keeping with fancy guppies, bettas, and other long finned fishes. However, Continue reading

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7 easy aquarium invertebrates!

Invertebrates like shrimp, crayfish and crabs are a big favorite in the aquarium hobby. And for a good reason! There are many species that are very easy to keep, and also quite a few that do well in smaller tanks. They are fun to watch and some even have a bit of personality! So what are the easiest inverts to keep in our aquariums?



There are multiple shrimp species that are very easy to keep in the aquarium. Shrimp are fun to watch and have a low bioload, meaning you can keep big groups. I’m personally a huge shrimp fan and I’d definitely recommend considering them for a community tank or even setting up a special shrimp aquarium!

Cherry shrimp (Neocaridina heteropoda var. Red) - Cherry shrimp are among the most popular species, which is not surprising. They are easy to keep, colorful, they breed easily and they make a great clean up crew. Any filtered aquarium of 5 gallons (18L) or more is usually enough for a colony to thrive, so no need for a big tank! If your cherry shrimp share an aquarium with more aggressive fish like a betta, be sure to add plenty of hiding places to prevent them from being eaten.
You can buy cherry shrimp online here!
You can find a complete cherry shrimp caresheet here!


Amano shrimp (Caridina multidentata) - Although not suitable for aquariums under 10 gallons (38L), Amano shrimp are a fantastic addition to Continue reading

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