Koi fish are relatively large in size and have a preference for nibbling on aquatic plants. When choosing suitable aquatic plants, both aesthetic appeal and practicality need to be taken into account. Here are some recommendations for aquatic plants that are suitable to be paired with koi fish:
1. Anubias
Recommendation Reason: The stems and leaves of Anubias are thick, sturdy, and firm. Koi fish find it difficult to nibble on them, making Anubias suitable for long-term cultivation. Anubias is an epiphytic aquatic plant, usually tied to driftwood or stones to grow. It can not only beautify the fish tank but also will not interfere with the activities of koi fish.
Common Varieties: Anubias barteri var. nana, Anubias afzelii.
2. Egeria densa
Recommendation Reason: Egeria densa grows rapidly, is easy to maintain, and can provide a certain degree of shelter. Although koi fish may nibble on it, its rapid growth allows for regular replenishment.
Precautions: It is necessary to regularly clean up the residues to prevent water quality from being contaminated.
3. Echinodorus grisebachii
Recommendation Reason: The leaves of Echinodorus grisebachii are broad and large, making it suitable for use as a middle-ground aquatic plant, which can add a sense of depth to the fish tank. Its root system is well-developed, enabling it to grow stably. However, it should be noted that koi fish may nibble on the tender leaves.
Common Varieties: Echinodorus tenellus, Echinodorus amazonicus.
4. Hygrophila polysperma 'Rosanervig'
Recommendation Reason: The leaves of Hygrophila polysperma 'Rosanervig' are relatively hard, making it difficult for koi fish to nibble on them. Moreover, its bright color can add a splash of color to the fish tank.
Precautions: Regular pruning is required to maintain its aesthetic appearance.
5. Moss
Recommendation Reason: Moss has strong adhesion and is suitable for growing when tied to driftwood or stones. It can provide a hiding place for koi fish. Although koi fish may nibble on it, its rapid growth allows for regular replenishment.
Common Varieties: Flame Moss, Christmas Moss.
Precautions
Quantity of Aquatic Plants: Do not have too many aquatic plants, as this may consume a large amount of oxygen and affect the health of koi fish.
Water Quality Management: Regularly clean up the residues of aquatic plants to prevent water quality from being contaminated.
Avoid Artificial Rockeries: Koi fish are suitable for being raised in a bare-bottomed fish tank. Placing artificial rockeries can easily scratch the fish's body, and fish excrement sinking in the sand and gravel will contaminate the water quality.
By making a reasonable choice of aquatic plants, not only can the fish tank be beautified, but also a good living environment can be provided for koi fish.