Dreams involving animals, especially creatures like salamanders and earthworms, can carry significant symbolism. Salamanders are often associated with transformation, regeneration, and adaptability due to their ability to regenerate limbs. This could suggest that you are going through a period of change or healing in your life. The act of feeding them earthworms might symbolize nurturing or providing sustenance to these transformations.

The mention of your deceased brother adds a poignant layer to your dream. It may indicate that you are processing your feelings about his passing or reflecting on your relationship with him. Sharing this dream with your partner suggests a desire for connection and support as you navigate these emotions.

Overall, this dream might reflect your journey of healing, transformation, and the importance of connection with loved ones, both living and those who have passed. It could be beneficial to explore your feelings surrounding your brother's memory and how they relate to your current life changes. Consider journaling about your thoughts or discussing them further with your partner for deeper insight.