Two kinds of dead meat and two kinds of blood have been made lawful for you. The two kinds of dead meat are fish and locusts, and the two kinds of blood are the liver and spleen. [Ibn Maajah]

"«أُحِلَّتْ لكم مَيْتَتَانِ وَدَمَانِ، فأما الميتتان: فَالْجَرَادُ والْحُوتُ، وأما الدَّمَانِ: فالكبد والطحال». [صحيح.] - [رواه ابن ماجه وأحمد.]"