© Der Regenbogenfisch / CC BY-SA 3.0 de斑點藍眼魚（Pseudomugil gertrudae）
The Spotted Blue-eye (Pseudomugil gertrudae) is a tiny rainbowfish relative with a translucent body scattered with black spots and fins edged in yellow. Reaching a maximum length of only about 3.8 cm, it can be kept in numbers without crowding a tank. Males put on a striking display for such a small fish, spreading their fins wide to court females. At the same time, this species has a somewhat timid nature and is particular about tankmates, doing best in a single-species setup or alongside only the calmest, smallest companions. Given a quiet, well-suited environment, its subtle colors and natural behavior really come into their own. Classed as suited to intermediate keepers, it rewards attentive care with water quality and surroundings tailored to its sensitive temperament.
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關於斑點藍眼魚（Pseudomugil gertrudae）
Pseudomugil gertrudae, the Spotted Blue-eye, is a tiny rainbowfish with a translucent body and yellow-edged fins. Max 3.8 cm, suited to intermediate keepers.
迎接斑點藍眼魚（Pseudomugil gertrudae）前需要了解的7件事
1Small Size, Careful Volume
Adults reach only about 3.8 cm, but this species naturally schools. Rather than keeping just one or two, aim for enough tank volume to house a small group so you can observe its natural swimming behavior.
2A Timid Temperament
This fish tends to be shy, so providing plants or other cover where it can retreat helps it settle in. A calm, secure environment brings out its natural coloration and behavior more readily.
3Choosing Tankmates Carefully
Because of its timid nature, this species does best in a single-species tank or alongside only very calm, small fish. Housing it with more active or larger fish can cause it to become stressed and withdrawn.
4Watching Male Displays
Males display by spreading their fins wide. Keeping several individuals in a calm setting gives you the chance to observe this courtship-like behavior.
5Suited to Intermediate Keepers
This species is generally considered suitable for intermediate keepers. It can be sensitive to sudden changes in water quality or environment, so maintaining stability is important.
6Preparing the Tank in Advance
Given its shy, delicate nature, setting up hiding spots and a calm layout before bringing the fish home can help it adjust more smoothly to its new environment.
7What to Watch Day to Day
With its translucent body, black spots, and yellow-edged fins, this species has a distinctive look that makes it easier to notice changes in coloration or fin condition during daily observation. Knowing its normal appearance is helpful.
斑點藍眼魚（Pseudomugil gertrudae）的常見問題
- Q.Can beginners keep the Spotted Blue-eye?
- A.This species is classed as suitable for intermediate keepers. Its timid temperament and sensitivity to water quality changes make it better suited to those with some prior fishkeeping experience.
- Q.Can it be kept with other fish?
- A.Because it is timid, a single-species tank or pairing with only very calm, small fish works best. It can become withdrawn if kept with more active tankmates, so choose companions carefully.
- Q.How large does it grow?
- A.It is a very small species, reaching a maximum of only about 3.8 cm as an adult. Part of its appeal is watching it school in a group despite its diminutive size.
- Q.How can males and females be told apart?
- A.Males are known for spreading their fins wide in a display behavior. An individual showing this courtship-like posturing is likely to be male.
- Q.Is this species subject to CITES regulations?
- A.The Spotted Blue-eye is not subject to CITES.
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