How to spawn enemies on my spawnpoints

Hey so im trying to make my enemies spawn on a random spawnpoint i have but when i try it it spawn at random positions instead of the spawnpoint this is how they spawn and my spawnpoints

public GameObject[] spawnPoints;
void Start()
        spawnPoints = GameObject.FindGameObjectsWithTag("SpawnPoint");
        es = SpawnRandomEnemy();
        StartCoroutine (es);

WaitForSeconds wait = new WaitForSeconds(spawnInterval);
        while (currentNumberOfEnemies < maxNumberOfEnemies)
            int enemyIndex = Random.Range(0, enemyPrefabs.Length);
            Vector3 spawnPos = new Vector3(Random.Range(0, spawnPoints.Length), 1);

            Instantiate(enemyPrefabs[enemyIndex], spawnPos, enemyPrefabs[enemyIndex].transform.rotation);
            yield return wait;

You need to use the position of the spawnpoint in spawnPos. Maybe you can make a method to get a random spawnpoint form your spawnpoints or just try it with the transform.position of the first spawnpoint during instantiate. This should place your mobs on the spawnpoint.