List: word usually written using kana alone

usually written using kana alone  noun  noun (generic) 

• Chinese peacock (species of swallowtail butterfly, Papilio bianor)

usually written using kana alone  noun  noun (generic) 

• cut-tailed bullhead (species of catfish, Pseudobagrus aurantiacus)

usually written using kana alone  noun  noun (generic) 

• Calopteryx cornelia (species of damselfly)

usually written using kana alone  noun  noun (generic) 

• Japanese eight-barbel loach (Lefua echigonia)

rarely used kanji form  usually written using kana alone  noun  noun (generic) 

• cattle egret (Bubulcus ibis)

usually written using kana alone  noun  noun (generic) 

• Schlegel's green tree frog (Rhacophorus schlegelii)

usually written using kana alone  noun  noun (generic) 

• forest green tree frog (Rhacophorus arboreus)

usually written using kana alone  noun  noun (generic) 

• dusky tripletooth goby (Tridentiger obscurus)

search-only kanji form  usually written using kana alone  noun  noun (generic) 

• freshwater goby (any fish of genus Rhinogobius)

usually written using kana alone  noun  noun (generic) 

• goatsbeard brotula (species of ophidiiform fish, Brotula multibarbata)